大约有 710 项符合查询结果（耗时：0.0217秒） [XML]
How to set an environment variable only for the duration of the script?
On Linux (Ubuntu 11.04) in bash, is it possible to temporarily set an environment variable that will only be different from the normal variable for the duration of the script? For example, in a shell script, making an app that saves to HOME portable by temporarily setting HOME to a folder in the pre...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...再次使用最近释放的内存。 ptmalloc 是 Doug Lea Malloc 的一个扩展版本，支持多线程。在本文后面的 参考资料部分中，有一篇描述 Doug Lea 的 Malloc 实现的文章。
BSD Malloc：BSD Malloc 是随 4.2 BSD 发行的实现，包含在 FreeBSD 之中，这个分...
Where to place $PATH variable assertions in zsh?
I love zsh , but I am not sure where to place my $PATH and other variable assertions? I find that they are scattered between the files .zshrc .zprofile .bashrc .bash_profile , and sometimes doubled.
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CDN（内容分发网络）技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...内容访问量，减轻服务器的压力，提升了网站的性能和可扩展性。
与目前现有的内容发布模式相比较，CDN强调了网络在内容发布中的重要性。通过引入主动的内容管理层的和全局负载均衡，CDN从根本上区别于传统的内容发布模...
转型产品经理必看 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...当接到一个需求的时候，首先是从现有工程架构的角度和扩展角度去考虑，一个需求或者一个功能的实现与否第一考虑要素是对现有系统的兼容性以及扩展难易程度。这是一种很正常的思维，因为我也是这样。但从另一个角度考...
MFC CListCtrl使用方法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...，小图标，列表，详细资料”
2. 设置listctrl 风格及扩展风格
LONG lStyle;
lStyle = GetWindowLong(m_list.m_hWnd, GWL_STYLE);//获取当前窗口style
lStyle &= ~LVS_TYPEMASK; //清除显示方式位
lStyle |= LVS_REPORT; //设置style
SetW...
Making code internal but available for unit testing from other projects
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If you're using .NET, the InternalsVisibleTo assembly attribute allows you to create "friend" assemblies. These are specific strongly named assemblies that are allowed to access internal classes and members of the other assembly.
Note, this should be used with d...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
... It doesn't work on nexus 4. can you please tell how to overcome this problem. I have almost tried everything. Thanks.
– Shah
Feb 27 '15 at 19:45
3
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How do you write a migration to rename an ActiveRecord model and its table in Rails?
I'm terrible at naming and realize that there are a better set of names for my models in my Rails app. Is there any way to use a migration to rename a model and its corresponding table?
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程序员必知 —— 编程语言创始人 - 创意 - 清泛网 - 专注C/C++及内核技术
...的Emacs类编辑器Gosling Emacs（以C语言编写，使用Mocklisp作为扩展语言）。1983年获得了美国卡内基梅隆大学计算机科学博士学位，博士论文的题目是："The Algebraic Manipulation of Constraints"。毕业后到IBM工作，设计IBM第一代工作站NeWS系统...