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介绍malloc与free函数的用法，并利用C语言自己实现malloc与free函数，完成内存管理。

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截止至6/13/2023，Cadence最新版本是Cadence SPB 22.1； 为了快速查看22.1及17.x版本的PCB，Cadence推出了占用少量存储的Cadence Allegro Viewer--Allegro Free Physical Viewer 22.1； “CadencePCBViewers.exe”安装后包含三个部分： Allegro Free Physical Viewer 22.1（2022 S003 [3/19/2023]）-- 用于查看PCB； OrCAD Capture 22.1（2022-S003 [3/19/2023]）--用于查看原理图； Cadence APD+ Free Physical Viewer 22.1（2022 S003 [3/19/2023]）；

Your mouse is slowing you down. The time you spend context switching between your editor and your consoles eats away at your productivity. Take control of your environment with tmux, a terminal multiplexer that you can tailor to your workflow. With this updated second edition for tmux 2.2, you'll customize, script, and leverage tmux's unique abilities to craft a productive terminal environment that lets you keep your fingers on your keyboard's home row. You have a database console, web server, test runner, and text editor running at the same time, but switching between them and trying to find what you need takes up valuable time and breaks your concentration. By using tmux 2.2, you can improve your productivity and regain your focus. This book will show you how. This second edition includes many features requested by readers, including how to integrate plugins into your workflow, how to integrate tmux with Vim for seamless navigation - oh, and how to use tmux on Windows 10. Use tmux to manage multiple terminal sessions in a single window using only your keyboard. Manage and run programs side by side in panes, and create the perfect development environment with custom scripts so that when you're ready to work, your programs are waiting for you. Manipulate text with tmux's copy and paste buffers, so you can move text around freely between applications. Discover how easy it is to use tmux to collaborate remotely with others, and explore more advanced usage as you manage multiple tmux sessions, add custom scripts into the tmux status line, and integrate tmux with your system. Whether you're an application developer or a system administrator, you'll find many useful tricks and techniques to help you take control of your terminal. Table of Contents Chapter 1. Learning the Basics Chapter 2. Configuring tmux Chapter 3. Scripting Customized tmux Environments Chapter 4. Working With Text and Buffers Chapter 5. Pair Programming with tmux Chapter 6. Workflows

“allegro_free_viewer_17.4-2019 S008.exe”安装后包含三个部分： Allegro Free Physical Viewer 17.4-2019 S008 [7/14/2020] ； OrCAD Capture 17.4-2019 S008 [6/25/2020]； Cadence APD+ Free Physical Viewer 17.4-2019 S008 [7/14/2020] ；

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