database system concepts. 英文原版。英文 好看这本很好

Power-System-Analysis-And-Design fifth edition J.D.Glover

Code alone isn’t enough. Sure, it’s what the computer runs, but code has to come from somewhere. A programmer has to sit down and decide what features to include, how they should be implemented, what other software to utilize, and how to provide hooks for future enhancements to be added. It’s easy to skip straight to code, ignoring the cognitive process that produces it, but great programmers always have reasons for the decisions they make. With a framework, like Django, many such decisions have already been made, and the tools provided are shaped by these decisions, and by the programmers who made them. By adopting these philosophies in your own code, not only will you be consistent with Django and other applications, but you may even be amazed at what you’re able to accomplish. Beneath even the simplest code is the thought process that went into its creation. Decisions were made about what it should do and how it should do it. This thought process is a step often overlooked in books and manuals, leading to an army of technicians slaving away, writing code that manages to accomplish the task at hand but without a vision for its future. While the rest of this book will explain in detail the many basic building blocks Django provides for even the most complicated of projects, this chapter will focus on even more fundamental aspects of the framework. For those readers coming from other backgrounds, the ideas presented in this chapter may seem considerably foreign, but that doesn’t make them any less important. All programmers working with Python and Django would do well to have a solid understanding of the reasons Django works the way it does, and how those principles can be applied to other projects. You may want to read this chapter more than once, and perhaps refer to it often as you work with Django. Many of the topics are common knowledge in the Django community, so reading this chapter carefully is essential if you plan to interact with other programmers.

Data Structures and Algorithms in Java 6th Edition.2014.pdf数据结构与算法 纯英文 java

最近在整理车载音乐U盘的时候，有许多重复的歌，然后就发现这款软件《重复音乐查找助手(dupeGuru Music Edition) v6.81》，可以删掉重复的文件。

图灵原版数学统计学系列02 时间序列分析 预测与控制 Time Series Analysis -- Forecasting and Control, 3rd Edition

《Windows程序设计(第5版 英文版)》是一本经典的Windows编程圣经，曾经伴随着近50万Windows程序员步入编程殿堂，成长为IT时代的技术精英。作为Windows开发人员的必备参考，涵盖基础知识和中高级主题，全面地介绍了Windows程序设计所涉及的细枝末节，旨在帮助读者从高屋见瓴的角度，建立完整的知识体系，为以后的职业生涯奠定良好的基础。全书共3部分23章。第1～12章着重介绍基础知识，第13～18章的主题为图形，第19～23章涉及更多高级主题。 《Windows程序设计(第5版 英文版)》适合任何层次的Windows程序员阅读和参考，是帮助他们梳理和建立Windows知识体系的理想读物。

中文翻译Introduction to Linear Algebra, 5th Edition 2.4节 我将从基本事实开始。矩阵是一个数字或“元素”的矩形数组。当 A 是 m 行 n 列时，它是一个“m×n” 矩阵。若矩阵形状相同，则它们可以相加。它们可以乘上任意常数 c。以下是关于 3 × 2 矩阵的 A + B 与 2A 的例子：  1 2 3 4 0 0  +  2 2 4 4 9 9  与 2  1 2 3 4 0 0  =  2 4 6 8 0 0 。 矩阵加法完全就像向量加法一样——每次算一个元素。我们甚至可将列向量视为一个仅有一列的矩阵 （如此 n = 1）。矩阵 −A 来源于乘以 c = −1（反转所有符号）。A 加上 −A 得零矩阵，此时所有元素为 0。所有这些都只是常识。 行 i、列 j 的元素被称为 aij 或 A(i, j)。沿第一行的 n 个元素为 a11, a12, . . . , a1n。矩阵的左下角 元素是 am1 且右下角元素是 amn。行号 i 从 1 到 m。列号从 j 从 1 到

Pangolin_Professinal_Edition_3.2.4.1132 破解版 SQL注入工具.

embedded linux primer 第二版