本文详细总结了华为OD（Online Development）面试的全流程，包括笔试、性格测试、技术一面、技术二面、综合面试和资格面试六个环节。笔试部分涉及三道算法题，分值为100、100、200，目标院校和非目标院校的分数线有所不同。性格测试环节不可忽视，可能会影响最终结果。技术一面由入职后所在项目组的面试官进行，相对轻松；技术二面则是交叉面试，涉及大量技术问题，如JVM组成、Java文件加载、线程安全、SpringAOP、SpringBoot自动装配等，并包含手撕代码环节。综合面试主要考察项目经验、实习经历和个人性格，资格面试则类似于HR面，询问个人基本情况和职业规划。整个流程严谨全面，旨在全面评估应聘者的技术能力和综合素质。

unity字母绘画小游戏源码，unity完整项目源码，项目演示视频地址https://www.bilibili.com/video/BV1Ly41187XE/；unity字母绘画小游戏源码，unity完整项目源码，项目演示视频地址https://www.bilibili.com/video/BV1Ly41187XE/；unity字母绘画小游戏源码，unity完整项目源码，项目演示视频地址https://www.bilibili.com/video/BV1Ly41187XE/；unity字母绘画小游戏源码，unity完整项目源码，项目演示视频地址https://www.bilibili.com/video/BV1Ly41187XE/；unity字母绘画小游戏源码，unity完整项目源码，项目演示视频地址https://www.bilibili.com/video/BV1Ly41187XE/；unity字母绘画小游戏源码，unity完整项目源码，项目演示视频地址https://www.bilibili.com/video/BV1Ly41187XE/；unity字母绘画小游戏源码，unit

基于C#实现的汇川全系列PLC Modbus TCP通信的源码库。该源码库提供了完整的通信解决方案，包括TCP连接、变量表管理、读写操作等功能。文中展示了如何将复杂协议交互封装为即插即用的模块，提供了一键操作的功能，并通过详细的注释帮助开发者理解和使用。此外，还介绍了变量表管理、面向对象的操作方法以及异常处理机制，如自动重连和指数退避等待。同时，项目内置了可视化调试工具，能够实时监控通信报文，提高问题排查效率。最后，强调了代码的实际应用效果，在汽车焊装车间连续运行6个月无故障。 适合人群：具备C#编程基础并希望深入了解PLC通信的开发人员，尤其是从事工业自动化领域的工程师。 使用场景及目标：适用于需要与汇川PLC进行Modbus TCP通信的项目，旨在简化通信开发流程，提高开发效率和稳定性。具体应用场景包括但不限于工厂自动化、生产线控制等。 其他说明：源码完全开放，注释详尽，便于二次开发和定制化改造。项目经过实际项目验证，可靠性高，适合用于生产环境。

VCLZip Native Delphi Zip/UnZip Component! (VCLZip Lite: Version 2.23 April 14th, 2002) (VCLZip Pro: Version 3.10 Buid 1 - November 25th, 2007) IMPORTANT: If installing the registered version, please be sure to always re-install/rebuild the components (VCLZip and VCLUnZip) to the component pallette (or rebuild the design time package) so that the ThisVersion property and any other new properties will be properly updated. If your application still does not run without the IDE, open up VCLZip's package, click on options and look at the Directories/Conditionals tab. If KPDEMO is defined, remove it and recompile the package. ***IMPORTANT: Please remember do not install these components into a package by the name of either VCLZip or VCLUnZip. You will receive an error if you do. PLEASE TAKE A LOOK AT THE "WHAT's NEW IN THIS VERSION" LINK IN THE HELP FILE AS IT HAS CONVENIENT LINKS TO ALL OF THE NEW TOPICS. ==================== Version 3.10 Build 1 - Several bug fixes. - Added support for Delphi 2006, 2007 - Added support for BCB 2006, 2007 - Improved memory performance when working with archives containing extremely high number of compressed files. ==================== Version 3.06 Build 2 Made Delphi 2005 compatible Other assorted fixes ==================== Version 3.05 Build 1 Fixed a lot of incompatabilities between VCLZip and WinZip Other assorted fixes ==================== Version 3.04 Build 1 New ZLib methods for optimized compression and decompression of single entities of data in standard ZLib format, without the overhead of the PKZip format. This is excellent for compression of data to be sent across the net, compressing web pages (http compliant compression), blobs, etc. - ZLibCompressStream - ZLibDecompressStream - ZLibCompressBuffer - ZLibDecompressBuffer - ZLibCompressString - ZLibDecompressString Overloaded TStream Methods for Delphi 4,5, BCB 4, and 5 - UnZipToStream - UnZipToStreamByIndex - ZipFromStream Special OnGetNextTStream Event for Delphi 4,5, BCB 4, and 5 - Allows zipping multiple TStreams in one process - More efficient than calling ZipFromStream multiple times Capability to use the latest version of ZLib 1.2.1. - VCLZip currently uses 1.4.1 by default. - By defining ZLIB121, VCLZip will use the latest version of ZLib which is included with the registered version. Some optimization improvements which should show some improvement in zipping and unzipping speed when using TkpStreams with D4, D5, BCB4, and BCB5. ============ Version 3.03 (VCLZip Pro) - Please test your application thoroughly with this new version of VCLZip Pro. While it has been tested and has even been used in at least two production applications for several months now prior to initial release, there are so many combinations of property settings, environment differences, and ways to use VCLZip that you should always test VCLZip completely in your application before deploying. *** New Zip64 capabilities, properties, methods and events: - Uncompressed, Compressed, and Archive file sizes can be up to 2^63-1 bytes in length. - You can compress up to 2147483647 files into an archive. This is compatible with PKZip's Zip64 format. - If a file does not extend beyond any of the original limitations (filesizes of 4 gig or 65535 files) then no Zip64 format information is included in the archive. - property isZip64 - tells you when you are working with a zip file that is using Zip64 format. Much faster processing due to linking to Zlib object files for compression and decompression routines. Blocked Zip Files (spanned zip archives split onto hard drive) - Now completely compatible with PKZip and WinZip split archives file naming format. - For backwards compatability you can tell VCLZip to use the old VCLZip filenaming format by using the BlockMode property. - New method OnFileNameForSplitPart called just before each split filepart is created. VCLZip supplies a default implementation of this method so for most purposes you won't need your own. - method DefaultFileNameForSplitPart - VCLZip calls this internally if you don't define your own OnFileNameForSplitPart. You can also call it from your own OnFileNameForSplitPart if you wish to add some processing to the default behavior. - property BlockMode - determines whether VCLZip uses PKZip/WinZip standard naming convention or VCLZip classic method. - method DefaultGetNextDisk - VCLZip calls this internally if you don't define your own OnGetNextDisk. You can also call it from your own OnGetNextDisk event if you wish to add some processing to the default behavior. - Properties for controlling which files are zipped... - IncludeHiddenFiles - default False; - IncludeSysFiles: - default False; - IncludeReadOnlyFiles: - default True; - IncludeArchiveFiles: - default True; - Event OnGetNextStream - Allows you to zip from multiple streams when using the ZipFromStream method. This improves performance since repeated calls to ZipFromStream causes the archive to be updated on each subsequent call. - property ThisBuild - Tells you the current build. See also ThisVersion - property OnHandleMessage - Handles interactive messages with VCLZip. There is a default, so you don't need to define your own unless you wish to eliminate interactive messages and handle them on your own. This is helpful if you are using VCLZip as a service or on a webserver for instance. ******** Upgrading existing applications that use VCLZip 2.X ********** For the most part, existing applications will work as-is. Just install VCLZip 3.X and recompile your code. Here are some things to be aware of though... 1) If your app currently creates mmBlock archives (spanned directly to hard drive) and you define your own OnGetNextDisk in VCLZip 2.X, you should move your code from this event that handles mmBlock events to the new event OnFileNameForSplitPart. However, if you simply rely on VCLZip's default OnGetNextDisk then you don't have to worry about this. 2) If your app creates mmBlock archives, the default naming convention has changed to match the PKZip/WinZip standard. If you wish to keep the same naming convention then set BlockMode := mbClassic. 3) OnGetNextDisk and OnPrepareNextDisk events are called for the 1st disk now. VCLZip 2.X only calls these events starting with the 2nd disk. 4) properties CompressedSize[Index], UncompressedSize[Index], ZipSize are now Int64 types. 5) Delphi 4, Delphi 5, BCB 4, and BCB5 are all capable of using the Zip64 format. However they use the TkpHugeStream decendants which act just like TStreams except they handle files/stream sizes larger than 2gig. There is a TkpHugeFileStream and a TkpHugeMemoryStream which should handle 99% of all necessary actions. If you currently work with VCLZip 2.X with TBlobStreams or some other type of streams, you can either define your own TkpBlobStream for instance which inherits from TkpHugeStream, or use the TkpHugeStream.CopyFrom(TStream, Count) and the TkpHugeStream.GetStream: TStream methods to give VCLZip your stream and get it back. Ofcourse when using regular TStream decendants in D4,4,BCB4,and 5, you cannot create Zip64 archives. If you use Delphi 6, 7, or BCB 6, you don't have to worry about any of this as the normal TSTream is used by VCLZip and handles large file/stream sizes. ============ Version 2.23 (VCLZip Lite) Added the OEMConvert property. Filenames stored in a PKZip compatible archive normally go through an OEM conversion to make them ascii compatible. When opening the zip file the conversion is undone. If you do not plan on having other zip utilities opening up your archives this conversion process is not really necessary. Setting this property to False will eliminate this process. The default value for this property is True for normal PKZip compatability. Added OnEncrypt and OnDecrypt events. These allow you to replace the standard pkzip encryption with your own. Data is passed to these events a buffer at a time. Use this with care as this is still somewhat experimental and I'm not sure how useful it is yet. You must make all changes within the buffer sent in to you. Treat the entire file as a stream. Byte for byte replacement only. No additional keys can be saved. Added OnRecursingFile event. Sometimes when using wildcards and recursing directories, there was no reporting of progress. This will be fired each time a file matches as the file list is being built while recursing directories. Added the EncryptBeforeCompress boolean property. The default for this property is False and if left like this VCLZip will behave like normal. If set to True, VCLZip will encrypt each buffer prior to compressing it instead of afterwards. This will cause files to not be decryptable by normal zip utilities thereby adding a bit of extra security. Bugs Fixed: IMPORTANT!!! Behavior of freeing the ArchiveStream (compressed stream) has been modified. VCLZip will now no longer try to free ArchiveStream, you must free it yourself. This was due to a problem where it would be freed automatically if there was a problem with the ArchiveStream when trying to open it as a zip file (possibly corrupt). Best practice is that ArchiveStream should always point toward a TMemoryStream that you create anyway. Modified the SFX code (the code used to create the SFX stub distributed with VCLZip) so that it handles filenames that have been run through an OEM Conversion. The SFX was losing accented characters. This modification means that if you are creating zip files to be used as SFX's you will want to leave the OEMConvert property mentioned above, set to it's default value of True. Modified so that when cursor is changed to hourglass by VCLZip, previous cursor is saved correctly instead of just changing it back to default cursor. Now saves Central Directory Extra Fields correctly. Fixed the SFX code so that it works properly if you use Copy /B to concatenate a zip file to the stub. Due to a Delphi strange behavior sometimes path names for directory only entries would become corrupted. Removed reference to QConsts, replaced with RTLConsts. Sometimes a GPF would result if a corrupt zip file was opened. Using a wildcard in pathname added to FilesList did not work. Using '*.*' as a wildcard in files added to FilesList now is the same as using '*'. VCLZip will now check for CancelTheOperation during initial building of the fileslist instead of just during compression processing. Added a final call to OnTotalPercentDone with 100% because this didn't always happen. Attributes were not getting set correctly for directory-only entries. Fixed a problem that was not allowing ZipComment's to be added correctly to spanned or blocked zip files. Not the same fix as in 2.22. Directories (directory-only entries) were not being restored properly unless DoAll was True. You were unable to delete a directory from which files were recursively zipped until exiting your application. ============ Version 2.22 Now Delphi 6 compatible. New event called {link=93,OnRecursingFile} which gets called as VCLZip recurses directories searching for files that match a wildcard that is entered in the FilesList. This gets called each time a file matches the wildcard. Fixed a bug which kept diskettes from being labeled when creating spanned zip files on WIN31. Fixed a bug which sometimes did not allow zip comments to be added to blocked zip sets. Fixed a bug which caused VCLZip to not properly handle the IncompleteZip exception on spanned zip sets unless you called ReadZip prior to calling UnZip. Version 2.21 (Changes are shown in the build stages as they were implemented) Pre-Release Build 5: When working with temporary files, VCLZip will now rename, instead of copy, the temp file if the destination is on the same drive. This will speed up the adding of files to an existing zip file when the resulting zip file is very large. Pre-Release Build 4: New event called OnPrepareNextDisk which is an event that will allow you, when creating spanned zip files across diskettes, to do things like format a diskette that has just been inserted, or to add or delete files from the diskette before continuing with the zipping process. Fixed a problem that was causing the CancelTheOperation Method to not work properly. Pre-Release Build 3: Fixed bug which caused VCLZip to miscalculate space needed for zfc file if wildcards are put into the FilesList. Fixed bug so you could have FilePercentDone without needing TotalPercentDone when creating spanned zip files Fixed so relative_offset set correctly for spanned zips. Side effect of removing needless write of header. Added code to read local fileheaders if exception thrown when reading a central fileheader. Fixed problem where directories couldn't be created from directory entries because the fullpath wasn't known yet. Result of having moved this code to earlier. Fixed typo in creation of LOC header values which could cause error if reading local headers. Changed so Zip Comment starting position is calculated based on end of central record instead of end of file. Pre-Release Build 2: IMPORTANT: Changed default for FileOpenMode back to fmShareDenyNone as it had been for all but version 2.20. Fixed a problem where drivepart (i.e. C:\) was not being stripped when saving relative paths. Added a BufferedStreamSize property which can increase the speed of creating zips to floppy (and other slow media) dramatically. The new default for this should increase the speed by as much as 3 times, but you can now tweak this especially for your application! Added an ImproperZip property which gets set when VCLZip detects an inconsistency with the zip. This can be useful for detecting when VCLZip was able to open the zip in spite of an inconsistency found. There was no way to know this in the past. Fixed a problem where zip comments in zfc files were not being read correctly. Added a setZipSignatures procedure which allows you to modify the signatures of your zip file. This will cause other zip utilities to not be able to recognize or read your zip files created with VCLZip. Useful if you want to add further security to your zip files. Pre-Release Build 1: Some zip files would not open correctly, throwing an incomplete zip file exception due to an erroneous "extra field length" identifier in headers of some compressed files. These zip files are rare, but a very few people seemed to have several of them. This problem would not affect zip files created by VCLZip, and this problem should only occur in VCLZip 2.20, not in any previous version. If you had Range Checking turned on, VCLZip would get a range check error when using a wildcard that ended with a * as in 'somefile.*'. Under certain circumstances, drive information would not be stripped from path information if zipping recursively (including subdirectories) "Retrying" to zip a file that could not be opened using the OnSkippingFile event would not always work correctly. Creating spanned zip set to floppy should be faster now due to removing a needless header write to disk for each file. VCLZip would not compile correctly with MAKESMALL defined. Added code to make VCLZip work with BCB5. Haven't tested this yet though since I don't have BCB5 myself yet. Added readonly boolean ImproperZip property which will be set to True when some sort of problem is found when opening the zip file, even if recoverable. This property will be enhanced and refined in the future. If KeepZipOpen is set to True, when putting in the wrong disk in a spanned zip set, VCLZip would not always properly close the file on the old diskette before trying to open the file on the next diskette. Added ECantWriteUCF exception which will be thrown if VCLZip runs out of room to write the uncompressed file when unzipping. Timestamp was not being set properly when unzipping readonly files. Moved setting of the timestamp to before the attributes get set. ============ Version 2.20 Changes have been made in the following areas: --Performance There are a few code optimizations that should speed up the zipping process slightly. --Spanned Zip Files A new feature, turned on with the SaveZipInfoOnFirstDisk allows VCLZip to create and read spanned zip files starting with the first disk instead of the normally required last disk of the spanned disk set by saving a Zip Configuration File on the first disk. This feature can be used even if creating the spanned zip file directly to your hard drive. A new property, SaveOnFirstDisk, allows you to save room on the first disk when creating a spanned zip file, to allow room for other files, such as setup programs, data files, or a Zip Configuration File. Spanned zip files can now be directed toward disks greater than 2 gig in size as long as you are using Delphi 5 or BCB 4. --UnZipping The new Selected indexed property offers another way to flag files to be unzipped. Files that have the Selected property set to True can be unzipped using the UnZipSelected method. The Selected property will be cleared (set to False) for each file as it is unzipped, but you can also call the ClearSelected method to clear them all. At anytime the NumSelected property can be checked to see how many files have been selected. Also, the UnZipToBufferByIndex and UnZipToStreamByIndex methods allow you to unzip files specified by their index instead of by name or wildcard. The BufferLength property allows buffered output (buffer smaller than the total uncompressed filesize) when unzipping directly to memory (see UnZipToBuffer and UnZipToBufferByIndex). This will cause the OnGetNextBuffer Event to be called everytime BufferLength bytes have been output by VCLZip. Modified to work in all ways with zip files that have "extra fields" in their headers. These tend to be quite rare, but they do show up from time to time. --Zipping Added a property called FileOpenMode which allows you to define the file open mode for files when they are opened to be zipped. Added a Retry parameter to the OnSkippingFile Event that can be used to re-attempt to open a file for zipping that is open by another process. This gives the chance to close the file and continue with the zipping process rather than having to start over again. Added a ENotEnoughRoom exception which will be thrown if there is not enough room to write to the archive, i.e. out of disk space. The new OnUpdate Event gets fired when updating or freshening an existing archive. It is triggered for each file that already exists in the archive as it is either replaced or kept in the updated archive. The AddDirEntriesOnRecurse will cause separate directory entries to be included in archives when doing recursive zips through subdirectories. --Integrity Checking A new method, CheckArchive, will perform an integrity check on all files in an archive. This is much faster than using FileIsOK on each file if testing all files in an archive with VERY MANY files. Further improved checking for corrupted zip files when opening zip files. --Encryption The following new properties and methods allow lower level work with password encrypted archives: DecryptHeader Gets the decryption header for a particular compressed file in an archive GetDecryptHeaderPtr Same as DecryptHeader but easier to use in BCB. DecryptHeaderByte Method Tests a password against the decryption header found in the DecryptHeader property. GetDecryptHeaderByteByPtr Same as DecryptHeaderByte but easier to use in BCB. --Self Extracting Executables Changes were made to the ZIPSFX32.BIN stub itself: - Modified to work with zip files containing "extra fields" in their headers. - Modified to change mouse cursor to an hour glass during processing. - Check for correct file size is now done automatically - Now uses the end of central and central headers to find the first local header. - Added a progress meter - Better checking for corrupted zip files. - Added an information window that can optionally be shown when the sfx is initially started up. - Added an AutoRun option to make the sfx stub run automatially when double clicked with no other interaction from the user. For the new modified sfx stub, ZIPSFX32.BIN, instead of using kpSFXOpt, you should now use the TSfxConfig component to set the options for the sfx stub. The new sfx can be found in the sfx\ subdirectory as usual and is called ZIPSFX32.BIN and the original sfx can be found in the same subdirectory except it is now called ORGSFX32.bin. Just rename it if you prefer that one (use KPSFXOPT instead of TSfxConfig with the old stub). --Miscellaneous The installation is now easier, atleast for first time installers of the source code. The .DPK files for Delphi and .CPP files for BCB are now included. Now these files simply have to be compiled and that's it. There is a separate option in the installation for installing to the different versions of Delphi and BCB. Added a property called FlushFilesOnClose which will cause all files opened for write by VCLZip to have their disk buffers flushed to disk when closed. Added the capability to delete Selected files from an archive using the DeleteEntries Method. The behavior of the OnInCompleteZip Event has been greatly improved. You can now use this event to ask the user to insert the last disk of a spanned disk set rather than having to handle this situation from outside VCLZip. The register procedures were changed so that the components now get installed to the "VCLZip" tab on the palette. I found that for all but Delphi 1 I had to actually manually move the components to the "VCLZip" tab. You may find that you have to do this too if you have already installed VCLZip before. The components now use new bitmaps in place of the old ones on the component palette. Separated many compiler defines into a new file called KPDEFS.INC. ==================================== Version 2.18: 1) Thanks to the hard work of a fellow registered user, added the capability to remove all dependencies on the Dialogs, Forms, Controls, and FileCtrl units by defining the conditional MAKESMALL, which results in a smaller footprint. This can be quite useful when putting VCLZip into a DLL for instance. In order to make this work, go into your Project | Options and select the Directories/Conditionals tab and enter MAKESMALL in the conditional defines text box. In Delphi you can add this conditinal define to the project options of your application that uses VCLZip and then do a "build all". In BCB you will have to add this to the project options of the package that contains VCLZip and then rebuild the package. If you define MAKESMALL, the only things you lose are: a) ZIP file open dialog box that appears when the ZipName is set to "?" b) Select Directory dialog box that appears when the DestDir is set to "?" c) Changing the cursor to an hour glass during some operations. d) No long filename support in Delphi 1 2) Made VCLZip completely BCB4 compatible. 3) Added some exception handling to KPUNZIPP and KPINFLT, mainly to handle unexpected situations when wrong passwords are entered. This fixes the problem with PRP, the password recovery program. 4) For Borland C++ Builder, changed any COMP types to double, getting rid of the compiler warnings for unsupported comp type. This affects the OnStartZipInfo and OnStartUnZipInfo events, so you'll have to change the comp parameter to double in these events if you use them (in both your header files and in the CPP files). 5) Modified OnStartUnZip event so that FName (the filename of the file that is about to be unzipped along with complete path) is now a VAR parameter and can be modified. This allows you to change the path and name of a file that is about to be unzipped. This is especially helpfull in applications like Install Programs. NOTE: You will need to change your current code to add the VAR to the event definition and implementation if you already use this event in your application. (In BCB, add a & just before the parameter instead of VAR) 6) Moved many type definitions to VCLUNZIP.PAS so that kpZipObj won't have to be included in your USES list. 7) Fixed bug that caused GPF when setting Zip Comment to '' (empty string). 8) Moved strings in VCLZip/VCLUnZip into a string table, making the code size a little smaller as well as making it much easier to localize string information. However you have the option of not using the new string table, for whatever reason, by defining NO_RES in your project options (in the conditional defines text box on the Directories/Conditionals tab). 9) Removed the need for several files. No longer included are kpstrm.res, kpstrm.rc, kpsconst.res, kpsconst.rc, kpstres.pas, and for Delphi 1, kpdrvs.pas. In some cases the need for these files was eliminated and in other cases just rolled into the newly included kpzcnst.rc, kpzcnst.pas, and kpzcnst.res. Definining NO_RES in your project options will elimiate the need for these new files but will make your code size slightly larger and you won't be able to localize your application without changing VCLZip source code. 10) Modified the OnFilePercentDone and OnTotalPercentDone progress events to work better when creating spanned disk sets and blocked zip sets. They no longer report 100% when the compressed file still has to be copied to disk. 11) Added the ReplaceReadOnly property. Setting this to true will allow files with the ReadOnly attribute to be replaced during the unzip process. 12) Added the ifNewer and ifOlder options to the OverwriteMode property. (This had somehow made it into the help file but not into VCLUnZip) 13) Added the SFXToZip method which will convert an SFX file to a regular zip file. The header pointers will be properly adjusted during the conversion. 14) Fixed a problem where the OnGetNextDisk event would always revert to the DefaultGetNextDisk method instead of what you entered into the Object Inspector each time your project was re-opened. 15) Fixed a bug that caused CRC errors when unzipping files from spanned disk sets if they were STORED (no compression) and spanned across disks. 16) Added the OnZipComplete and OnUnZipComplete events. If defined, these will fire at the very end of a zip or unzip operation (after all files have been processed, not after each file). These events will rarely be used since, normally you will be able to do the same thing at the point that the call to Zip or UnZip returns, but these events can be useful when using VCLZip in threads where in certain circumstances the return from the Zip or UnZip methods are not seen. 17) Creation of SFX files has never been easier!!! The addition of the MakeNewSFX method allows you to create Self Extracting Executables without the need to create a zip file first. The files that you specify in the FilesList property will be zipped, using all the normal VCLZip property settings, and the SFX will be created, all in one step! In addition, you can create configurable SFX files using this method, and you can do this especially easy by adding the new unit kpSFXOpt to your application's USES list and using the new 32bit SFX stub that is now distributed with VCLZip. This allows you to easily set things like SFX Dialog caption, default target extraction directory, file to launch after extraction, etc. 18) Fixed a memory leak that only affects applications using VCLZip that are compiled with Delphi 2, and that use wildcard specifications in the FilesList property. Version 2.17a: 1) Fixed a bug that was keeping VCLZip from reading truncated zip files or sfx files that did not have their headers adjusted. 2) Fixed a bug that was causing a directory to be created on the C drive when doing integrity checking with the FileIsOK property. 3) Added {$V-} to kpZipObj.PAS 4) Moved two AssignTo methods to public instead of private in kpZipObj.PAS Version 2.17: 1) Added Memory zipping and unzipping capabilities through the UnZipToBuffer and ZipFromBuffer methods. See the documentation for these methods in the Help File for more information. 2) New FileIsOK Property allows you to check for the integrity of individual files within an archive without actually unzipping the file. 3) Fixed a bug that kept checking of volume labels from working on WIN31 when working with spanned disk sets. 4) Removed all references to ChDirectory so that VCLZip will be more thread safe allowing separate instances of VCLZip in separate threads to be performing zip/unzip operations at the same time. 5) A new public property PreserveStubs allows you to make modifications to sfx archives and have the archive remain an SFX rather than revert back to a normal zip file. 6) Added a default OnGetNextDisk event. If one is not defined, then the default event will be called when the situation arises that a new disk is needed when zipping or unzipping a spanned or blocked zip archive. 7) Added more power to the wildcard capabilities. Now you can qualify the * wildcard character, for instance: * would satisfy any number of contiguous characters as long as they are all a thru e. * would satisfy any number of contiguous characters as long as none of them were a thru e. This allows you to do things like include files in specific direcories into your ExcludeList. For instance: VCLZip1.ExcludeList.Add('c:\test\*.txt') would exclude the zipping of all .txt files in the test directory but not in any subdirectories. 8) Fixed other minor bugs and made other code enhancements. Version 2.16: ***Please be aware that if you currently use the OnSkippingFile event in any of your applications, version 2.16 will require a small modification as this event has an added parameter and one of the current parameters is used a little differently when being called by the zip operation. Please see the help file for more information. 1) The OnSkippingFile Event has been changed slightly, adding a parameter for the filename. 2) OnSkippingFile is now called when a file to be zipped is skipped because it is locked by another application. See the Help File for more information. 3) Fixed a bug with the Exclude and NoCompressList where they were ignoring entries with anything before the extention (i.e. 'somefile.*' as opposed to '*.zip') if you were saving directory information. 4) Fixed a bug that caused an error if you added a wildcard with a non-existent directory to the FilesList. 5) A few other minor bug fixes. Modifications for 2.15 include: 1) PackLevel can now be set to 0 (zero) which means no compression at all (STORED only). 2) New property ExcludeList is a new stringlist that you can add filenames and wildcards to in order to specify files that you do not wish to be included in an archive. 3) New property NoCompressList is a new stringlist that you can add filenames and wildcards to in order to specify files that you wish to be STORED with a PackLevel of 0 (zero), no compression. 4) All compiler warnings and hints were removed. Modifications for 2.14 include: 1) Delphi 4 compatability. 2) Added ability to use complex wildcards when specifying which files are to be zipped. This includes wildcard characters not only in the filename but also in the pathname. This allows you to specify directories using wildcards, for instance: VCLZip1.FilesList.add('c:\test\w*\mycode*.pas'); would get all PAS files beginning with mycode in subdirectories under TEST that begin with the letter w. Wilcards may be much more complex than this. Please see the help file for more information. 3) Added the ability to override the RECURSE property setting when specifying files to be zipped. By adding the following characters to the beginning of the filenames being added, you can override whatever the current setting is for the RECURSE property: '>' will force recursion into subdirectories '|' will force NO-recursion For instance: VCLZip1.FilesList.add('>c:\windows\*.ini'); will get all .ini files in and below the windows directory reguardless of what the recurse property setting is. and: VCLZip1.FilesList.add('|c:\windows\sys*\*.dll'); will get all .dll files in subdirectories of the windows directories that start with 'sys' but will not recurse into any directories below the sys* directories. 4) The [ and ] characters previously used as special wildcard characters have been changed to < and > since [ and ] are valid filename characters. If you still need to use the previous characters for backward compatability, I can show registered users how to easily modify a couple of constants in the source code in order to go back to the old style. See "Using Wildcards" in the help file for more information. 5) A few bug fixes. Modifications for 2.13 include: 1) New property ResetArchiveBitOnZip causes each file's archive bit to be turned off after being zipped. 2) New Property SkipIfArchiveBitNotSet causes files who's archive bit is not set to be skipped during zipping operations. 3) A few modifications were made to allow more compatibility with BCB 1. 4) Cleaned up the Help File some. 5) KWF file now works for Delphi 1 and Delphi 2 again. Still can't get context sensitive help in Delphi 3. 6) Cleaned up some of the code that was causing compiler warnings and hints. Modifications for 2.12 include: 1) Added a TempPath property to allow the temporary files path to be different from the Windows default. 2) Modified VCLZip so that any temporary files that are created receive a unique temporary filename so as not to clash with any other files in the temporary directory. This also allows working with zip files residing in the temporary directory. 3) Fixed a bug in the relative path feature. 4) Fixed a bug that caused a "list out of bounds" error if a file in the FilesList did not actually exist. Modifications for 2.11 include: 1) Fixed password encryption bug for 16 bit. 2) Fixed "invalid pointer operation" when closing application bug. 3) Fixed path device truncation bug which caused inability to modify existing archives in 16 bit. 4) Fixed inability to cancel during wilcard expansion bug. 5) Added capability to better handle corrupted timestamps. 6) Added capability to open and work with SFX files that were created with the COPY/B method (header files not adjusted). 7) Other small bug fixes. I'm still working on a bug which causes a GPF when continually unzipping the same file thousands to millions of times. This mainly affects programs like the Password Recovery Program (PRP) which uses the brute force method of searching for an archive's password. Modifications for 2.10 include: 1) Capability for 16bit VCLZip to store long file/path names when running on a 32bit OS. 2) New property (Store83Names) which allows you to force DOS 8.3 file and path names to be stored. 3) Better UNC path support. 4) Fixed a bug to allow files to be added to an empty archive. Modifications for 2.03 include: 1) Volume labels now get written correctly to spanned disk sets in Delphi 1 for all versions of Windows. 2) Delphi 1 VCLZip now correctly recognizes when it is running on Windows NT. 3) Fixed a problem with zipping files in the root directory when StorePaths = True. 4) File and Zip Comments are now read correctly from spanned/blocked zip archives. 5) Fixed a buf that was causing "Duplicate Object" errors. Modifications for 2.02 include: 1) Fix for file comments which were supposed to be fixed in version 2.01 but weren't. 2) Fix for stream zipping. Version 2.01 would not create a new archive if using a stream. (The Stream Demo now allows creating new zip files to streams too) 3) A few other minor modifications to further solidify the code. 4) A modification to the Zip Utility Demo which allows unzipping from Blocked zip files as if they were single zip files. 5) Added a read-only, published ThisVersion property which reflects the version of the VCLZip/VCLUnZip that you are currently working with. Modifications for 2.01 include: 1) Fixes for exceptions that were caused when CANCELING a zip or unzip of a spanned zip file. 2) Fix for a possible problem when zipping or unzipping a spanned zip file when one or more of the compressed files resided on more than 2 of the spanned parts. 3) Fix for file comments which were broken in version 2.00. Additional features for version 2.00 include: 1) Modify/Add internal file details (filename, pathname, timestamp, comment) for any file while zipping, in the OnStartZip event. 2) Add an Archive Comment while zipping in the OnStartZipInfo event. 3) Delphi 1 compatiblity for VCLZip. 4) Stream to Stream Zipping - Archives themselves can now be TStreams! 5) New Relative Path Information option. 6) Unzip archives that weren't zipped with the Relative Path option turned on as if they had been by determining how much path information to use with the Rootpath property. 7) Modify timestamps for files in existing archives (you could already modify filenames and pathnames for files in existing archives) 8) The OnBadPassword event now allows you to supply a new password and try the same file again when unzipping. 9) Source code has been cleaned up so that it will compile under Borland C++ Builder with no modifications. Also some bugs were fixed, most importantly: 1) An empty file, that had been compressed into an archive would cause any file added to the archive to cause the archive to approximately double in size. Any archives containing empty files are not corrupted, they are OK. This was simply a fix to the way the archive was processed. 2) After creating an SFX file, you had to close the zip file before you could modify it in any way, otherwise a stream read error was encountered. See the Help file for more information on new features. This zip file is part of a self contained installation program. Just run it and the installation program will begin. Contact vclzip@bigfoot.com for further information Thanks! Kevin Boylan

易语言是一种专为初学者设计的编程语言，它采用了贴近自然语言的语法，使得编程变得更加简单易懂。在本主题中，“易语言用求根公式解二元一次方程”涉及的是如何使用易语言来编写程序，通过求根公式解决二元一次方程的问题。 二元一次方程是指含有两个未知数的一次方程，通常形式为ax + by = c 和 dx + ey = f，其中a、b、c、d、e、f为常数，x和y是未知数，且a、b、d、e不全为零。求解二元一次方程的方法主要有两种：代入法和加减消元法。在这个案例中，我们关注的是利用求根公式来解决。 求根公式是解决二元一次方程组的一种数学方法，它可以给出二元一次方程组的唯一解。对于二元一次方程组ax + by = c 和 dx + ey = f，我们可以先通过消元将它们转换成一个关于x或y的一元二次方程，然后利用一元二次方程的求根公式求解。一元二次方程的求根公式为： x = [-b ± sqrt(b² - 4ac)] / (2a) 在易语言中，你需要定义变量a、b、c、d、e、f，然后根据上述公式编写计算程序。需要判断判别式b² - 4ac（在二元一次方程组中对应为（ae-bd）² - 4(ad-bc)）是否大于等于零，以确定方程是否有实数解。如果大于等于零，就可以使用求根公式计算出x的值，再将x的值代入任意一个原方程求解y。如果判别式小于零，则方程无实数解，可以提示用户。 在实际编程过程中，易语言提供了丰富的数学函数和控制结构，如`平方根`函数（sqrt）用于计算平方根，`条件`语句（if...else...）用于处理不同情况，以及`输出`语句（print）用于显示计算结果。源码中的每个部分都可能包含变量定义、算术运算、条件判断和结果输出等关键元素。 压缩包内的“用求根公式解二元一次方程易语言源码”文件，应包含了实现这一功能的具体代码。通过阅读和分析这些源码，你可以了解易语言如何处理数学计算，以及如何组织程序逻辑。这不仅有助于理解易语言的基本语法，还能提升你在数值计算和问题解决上的编程技能。 学习易语言解二元一次方程的过程，不仅锻炼了编程技巧，也复习了数学知识，是一次很好的理论与实践相结合的学习体验。通过这种方式，你可以更好地理解计算机如何帮助我们解决日常生活中的数学问题，并为更复杂的算法和程序设计打下基础。

本文提供了梦幻西游游戏中鼠标漂移问题的解决方案，通过代码实现鼠标移动的精确控制。代码中定义了鼠标移动的子程序，包括参数和局部变量，通过循环检测鼠标位置并进行调整，确保鼠标能够准确移动到目标位置。此外，还提供了驱动点击的实现，支持左键和右键的点击操作。该方法经过测试，能有效解决鼠标漂移问题，适合玩家自行测试使用。 梦幻西游作为一款经典的多人在线角色扮演游戏，深受广大玩家的喜爱。在游戏过程中，玩家经常会遇到鼠标漂移问题，这会导致玩家的瞄准和操作精度大大降低，从而影响游戏体验。为了解决这一问题，本文提供了一套有效的解决方案，即通过编写特定的程序代码来实现对鼠标的精确控制。 代码中详细定义了控制鼠标移动的子程序，这些子程序包含了必要的参数和局部变量。通过对鼠标位置的持续循环检测和调整，程序确保鼠标移动可以准确无误地达到预定目标位置。这种精确控制不仅提高了玩家在游戏中的操作准确性，也使得鼠标在快速移动或慢速精确定位时的稳定性大大增强。 此外，针对玩家在游戏中的交互需求，代码还实现了鼠标左右键点击的功能。这包括模拟玩家的点击动作，从而在游戏内触发相应的点击事件，如使用道具、施放技能等。开发者在代码中预留了接口，允许玩家根据自己的需求进行相应的调整和配置，以达到更好的游戏体验。 这种方法的提出是基于对梦幻西游游戏机制和玩家需求的深入理解。通过程序代码实现对鼠标的精确控制和点击操作，提供了一个稳定和高效的解决方案，有效解决了游戏中的鼠标漂移问题。根据描述，该方案经过实际测试，证明能够显著改善玩家的游戏体验，并且适合广大玩家进行测试和使用。 对于梦幻西游游戏来说，玩家的体验是非常重要的。鼠标漂移问题的解决，不仅提高了玩家的操作精确度，还提升了整体的游戏体验，使得玩家能够更加沉浸在游戏的世界中。而通过代码实现的这些功能，也体现了游戏开发社区对于问题解决和技术创新的不断追求。 随着技术的不断发展和玩家需求的不断变化，游戏开发领域将面临更多类似的技术挑战。开发者需要不断学习和探索，通过创新的思路和技术手段来解决这些问题，从而推动整个行业的进步。对于梦幻西游这类长盛不衰的经典游戏而言，持续的技术优化和创新将有助于其在激烈的市场竞争中保持领先地位，吸引和保留更多的玩家。 文章从技术层面深入探讨了梦幻西游鼠标漂移问题的解决方案，涵盖了程序代码的设计和实现、以及对游戏体验的改善。通过这种方法的提出和应用，玩家可以在游戏中享受到更加流畅和精确的操作体验，充分体验到游戏的魅力。同时，这为游戏开发者提供了宝贵的技术参考，展示了如何通过技术创新来满足玩家需求，从而推动游戏行业的持续发展。

离散傅里叶变换（Discrete Fourier Transform, DFT）是数字信号处理中的核心概念，广泛应用于图像处理、音频分析、通信系统等多个领域。在MATLAB编程环境中，DFT的实现通常通过内置函数`fft`来完成，但理解其源码可以帮助我们更深入地掌握这一算法的工作原理。 DFT是一种数学工具，它将一个离散时间信号转换到频域，让我们能够分析信号的频率成分。对于一个长度为N的一维序列x[n]，其DFT定义为： \[ X[k] = \sum_{n=0}^{N-1} x[n] \cdot e^{-j \frac{2\pi}{N} kn} \] 其中，X[k]是频率域表示的复数序列，k是频率索引，范围从0到N-1。逆DFT（IDFT）则是DFT的共轭对称形式，用于从频域反向转换回时域： \[ x[n] = \frac{1}{N} \sum_{k=0}^{N-1} X[k] \cdot e^{j \frac{2\pi}{N} kn} \] MATLAB的`fft`函数实现了快速傅里叶变换（Fast Fourier Transform），这是一种高效的DFT计算方法，基于分治策略的Cooley-Tukey算法。源码中可能包含以下关键步骤： 1. **预处理**：可能会检查输入向量的长度是否为2的幂，如果不是，可能通过填充零或截断来调整。 2. **基2分解**：将DFT分解成较小的DFT，对每个子序列进行计算。这通常通过递归实现，直到子序列长度为1。 3. **蝶形运算**：这是Cooley-Tukey算法的核心部分，它利用复数相乘的性质进行复数加减运算，大大减少了计算量。 4. **复共轭对称性**：在计算过程中，由于DFT的对称性，可以减少一半的计算，只需处理正频率部分即可。 5. **组合结果**：将所有子序列的结果合并得到最终的DFT。 在MATLAB的`fft`源码中，这些步骤可能以优化的方式实现，例如通过并行计算或利用硬件加速。理解源码有助于我们更好地定制和优化计算，例如针对特定数据特性或计算资源进行调整。 在实际应用中，DFT常常与窗函数结合，用于减小边缘效应；或者与其他信号处理技术如滤波、频谱分析等结合，提供丰富的信号处理能力。通过研究和理解`dft`源码，我们可以深入掌握DFT的工作机制，并能有效地在MATLAB中实现自定义的信号处理功能。

本文介绍了如何在Python中实现ICEEMDAN算法，通过调用MATLAB的库来完成。首先需要安装对应版本的Python和MATLAB，并确保版本兼容。然后，通过anaconda prompt或cmd进入环境，安装matlab.engine。使用ICEEMDAN算法需要iceemdan.m和emd.m文件。代码示例展示了如何载入数据、选取数据列、降维处理，并通过matlab.engine调用ICEEMDAN方法进行分解。整个过程详细说明了从环境配置到算法调用的完整步骤。 在当代信息技术领域中，数据处理和分析是核心任务之一。而在这其中，各种算法在数据处理中扮演着重要的角色。ICEEMDAN算法，作为一种有效的数据分解技术，被广泛应用于信号处理、金融分析和生物信息等多个领域。本文档详细介绍了如何在Python环境下通过调用MATLAB库来实现ICEEMDAN算法的过程。 为了顺利运行ICEEMDAN算法，首先需要确保开发环境具备兼容性。这意味着用户需要安装正确版本的Python以及MATLAB。安装完成后，需进入相应的开发环境，通过anaconda prompt或cmd进行操作。在环境配置阶段，用户还需要安装matlab.engine，这是因为ICEEMDAN算法的实现依赖于MATLAB的引擎接口。 安装好所有必要的组件之后，接下来的步骤是载入数据和选择数据列，这些通常涉及数据预处理的工作，为后续的算法处理打下基础。完成数据预处理后，进行降维处理是必要的，因为降维可以减少计算的复杂性，同时保留数据的主要特征。 文章提供了一个具体的代码示例，说明了如何通过调用ICEEMDAN方法进行数据分解。在代码示例中，详细的注释和步骤指导，使得整个流程变得清晰易懂。通过这一代码示例，开发者可以了解如何从环境配置到算法调用的每个具体步骤，确保每一步都准确无误地执行。 本项目的实现不仅仅是关于算法的复现，它还展示了如何整合不同编程语言的库，实现跨平台的功能调用。通过这种方法，开发者可以充分利用Python强大的数据处理能力以及MATLAB在算法实现上的成熟优势。 文章内容涵盖了从基础环境搭建到具体代码实现的全过程，这为初学者和有经验的开发者提供了一个宝贵的资源。通过这种实践，可以加深对ICEEMDAN算法工作原理的理解，同时提升使用Python和MATLAB进行复杂数据处理的技术水平。 项目代码的名称中包含了“ICEEMDAN算法实现”，这一名称直接指向了本项目的核心——将ICEEMDAN算法转化为可运行的代码。此名称简洁明了地传达了项目的目的和功能，体现了开发者的专注和专业。 整个文档不仅仅是代码的简单堆砌，它包含了从安装必要的软件包、环境配置，到载入数据、进行预处理、降维处理和调用算法等详细步骤。这种全面细致的指导，是项目能够成功运行的关键，也是对开发者友好的表现。 在实际的应用中，ICEEMDAN算法的实现能够帮助用户解决一系列与时间序列数据相关的复杂问题，例如在金融领域进行风险分析，在生物医学信号中识别异常模式等。通过本文档的指引，用户将能够快速上手，将ICEEMDAN算法应用到实际的问题解决中去。 此外，文档中还隐含了一个信息：使用现成的算法和软件包可以极大地节省开发时间。开发者无需从零开始编写所有代码，而是可以在现有的基础上进行修改和扩展，从而更快地实现项目需求。 随着数据科学的快速发展，对于这类能够有效处理复杂数据的算法需求也在不断增加。因此，将算法以源码包的形式提供给社区，不仅能够促进知识的共享和技术的进步，也能够激励更多的开发者参与到算法的优化和创新中来。

本文详细介绍了Luckysheet的三种导入导出方案：Java后台基于模板导出、Java后台基于POI解析导出以及前端js导出。重点分析了前端exceljs导出的优势，如速度快、无需后台处理，并提供了Vue版本的实现示例。文章还探讨了Luckysheet相较于onlyoffice的优势，如轻量、易集成和快速渲染。此外，作者分享了导入导出的具体实现步骤，包括初始化模板、保存和下载按钮的功能实现，以及基于模板导出的注意事项。最后，文章提供了相关GitHub项目链接和代码示例，帮助开发者快速上手Luckysheet的导入导出功能。

GS算法（Gerchberg-Saxton算法）是一种用于从强度信息中恢复相位信息的算法，最初于1972年提出，广泛应用于光学领域。该算法的基本流程包括初始估计、傅里叶变换、频域约束、逆傅里叶变换和空域约束的迭代过程。原始GS算法在空域约束时直接使用目标振幅，容易陷入局部最优解。而Fienup算法通过引入反馈调节量（步长α）改进了约束条件，显著提高了收敛速度。文章还提供了MATLAB代码实现，对比了两种算法的运行结果，展示了Fienup算法在相位恢复和模拟衍射输出上的优势。 GS算法，即Gerchberg-Saxton算法，是一种在1972年被提出，用于在已知强度信息的条件下恢复波前相位信息的计算方法。该算法主要用于光学领域，尤其在光学系统的相位恢复及计算光学领域有广泛应用。GS算法的基本原理是通过迭代的方式逐步接近真实的相位信息，其核心步骤包括对强度信息的傅里叶变换、应用频域约束条件、以及进行逆傅里叶变换来更新空域信息。通过反复迭代，算法可以逐步修正相位信息，最终达到波前恢复的目的。 GS算法的迭代过程首先需要一个合理的初始相位估计值，然后通过傅里叶变换将其转换到频域，在频域中对相位进行调整，使之满足已知的振幅信息。接着，通过逆傅里叶变换将调整后的频域信息转换回空域，再根据空域中的振幅信息进行调整，以此循环往复直至得到满意的结果。然而，GS算法的一个主要问题是其迭代过程可能会被局部最优解所困，导致恢复过程的效率和准确性受限。 为了解决这一问题，后续研究中提出了Fienup算法。Fienup算法是对GS算法的一个重要改进，它通过引入反馈调节量（步长α）来优化频域和空域的约束条件，有效避免了局部最优解的陷阱，大大提高了算法的收敛速度和恢复精度。Fienup算法的提出，为相位恢复问题的解决提供了更为高效和稳定的途径。 文章中提到了MATLAB代码的实现，将GS算法和Fienup算法进行了对比。通过具体的编程实现，可以看到Fienup算法在相位恢复和模拟衍射输出方面相比于原始的GS算法有着明显的优势。MATLAB作为一种广泛使用的数值计算软件，提供了强大的矩阵运算和数据处理能力，这使得算法的验证和实验变得更加方便快捷。代码实现部分可能包括对初始估计的生成、傅里叶变换和逆变换的实现、以及如何在迭代过程中应用频域和空域的约束条件等关键步骤的详细描述。 此外，这篇文章也为读者提供了更加直观的算法效果展示，通过图形化的方式对比了GS算法和Fienup算法在不同迭代次数下的恢复结果，使读者能够更加直观地理解两种算法的性能差异。通过这种直观的展示，研究者和工程师可以更加容易地根据实际需要选择合适的算法进行相位恢复。 光学算法、相位恢复、MATLAB是与GS算法相关的三个关键领域。光学算法涉及到光波传播和相互作用的数学描述；相位恢复则是光学测量和成像中的关键步骤；MATLAB作为一种科学计算软件，为这些复杂算法的实现提供了有效的工具。这些领域之间的交叉融合对于推动光学技术的发展起到了重要作用，特别是对于光学测量和图像处理等领域，精确的相位恢复技术可以带来更为清晰和精确的图像，从而提高光学系统的性能。