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MVC演化史 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...逻辑,而View关注外在的可视的逻辑。 多种表现形式:同一个Model往往需要多种View表现形式,如文本、图像。 提高可测试性:相对Model而言,View是不容易测试的。 从View中分离Controller就不那么重要了。Desktop软件的时代,View...
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How to use the C socket API in C++ on z/OS

...'m having issues getting the C sockets API to work properly in C++ on z/OS . 9 Answers ...
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How to hide output of subprocess in Python 2.7

... Redirect the output to DEVNULL: import os import subprocess FNULL = open(os.devnull, 'w') retcode = subprocess.call(['echo', 'foo'], stdout=FNULL, stderr=subprocess.STDOUT) It is effectively the same as running this shell command: retcode = os.system("echo 'fo...
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c++11右值引用、std::move移动语义、std::forward完美转发的一些总结 - C/C...

...rdstd::move 实际上并不能移动任何东西,它唯一的功能是将一个左值强制转换为右值引用,继而用于移动语义。从实现上讲,它基本等同于一个类型转换:static_cast<T&&>(lvalue);特别 std::move 实际上并不能移动任何东西,它唯一的...
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C++11 tuple 这一篇就够了 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++11 tuple 这一篇就够了tuple元组定义了一个有固定数目元素的容器,其中的每个元素类型都可以不相同,这与其他容器有着本质的区别 是对pair的泛化。首先来介绍元组的 tuple元组定义了一个有固定数目元素的容器,其中的每个元素...
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C语言程序判断一个浮点型的数是否为零 - C/C++ - 清泛网 - 专注C/C++及内核技术

C语言程序判断一个浮点型的数是否为零f > -1e-7 && f < 1e-7详细原理请参见:《浮点数在内存中的表示》。f > -1e-7 && f < 1e-7 详细原理请参见:《浮点数在内存中的表示》。浮点型 为零
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How do I remove the “extended attributes” on a file in Mac OS X?

... script that runs a stress test. Part of the test is to open, save, and close certain files. Somehow, the files have picked up some "extended attributes" that prohibit the files from being saved. That causes the stress test to fail. ...
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How to get only the last part of a path in Python?

In Python, suppose I have a path like this: 9 Answers 9 ...
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List directory in Go

...returns a list of sorted directory entries. The resulting slice contains os.FileInfo types, which provide the methods listed here. Here is a basic example that lists the name of everything in the current directory (folders are included but not specially marked - you can check if an item is a folde...
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Linux 进程卡住了怎么办? - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...,这也是无法用 kill 杀掉它的原因。 在 Stack Overflow 有一个解答: kill -9 只是给进程发送了一个 SIGKILL 信号,当一个进程处于特殊状态时(信号处理,或者系统调用中)会无法处理任何信号,包括 SIGKILL 也不能被正确处理,...