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为什么我们程序员写不出好代码？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...提交的仓库里。如果代码行数都计算在内的话，原本一个问题只需10行代码即可解决，程序员有可能编写5000行代码，来让功能更加灵活和兼容，这样，他的代码总量就会增加5000行了。
衡量生产力反而会使代码变的更糟，让项目...
Using Phonegap for Native Application development [closed]
...options for the interface/libraries, jquery-mobile, sencha touch, jqtouch, etc.. These each offer a unique approach, and feature-set. Do some research and use one, but avoid combining. You can read about some more options, tools here: http://www.phonegap.com/tool (link updated)
Also, more on jus...
Best practice for creating millions of small temporary objects
... allocation overhead
limit the size of your pool :)
Measure before/after etc,etc
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What is the difference between native code, machine code and assembly code?
...f it into the machine code version of the program. The point being C/C++, etc often does not compile straight to machine code it invisible to the user does a two or three step on the way. TCC for example is an exception to this it does go directly to machine code.
– old_timer
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HTML5 Canvas vs. SVG vs. div
...eady built in. SVG objects are DOM objects, so they have "click" handlers, etc.
DIVs are okay but clunky and have awful performance loading at large numbers.
Canvas has the best performance hands-down, but you have to implement all concepts of managed state (object selection, etc) yourself, or use...
linux 通过bind下搭建DNS Server - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ost不够用和避免加端口各种麻烦，以及子目录超级麻烦等问题。那么很多时候需要在开发环境上门绑定多个域名。假如是一个团队开发。那么每个人都去修改hosts是一件很悲剧的事情，那么你需要的就是一台内部的dns服务器。其...
Is there a performance impact when calling ToList()?
...mall the size is doubled so the backing array grows like this 4, 8, 16, 32 etc. Every time the backing array grows it has to be reallocated and all elements stored so far have to be copied. This operation is much more costly compared to the first case where an array of the correct size can be create...
What is LDAP used for?
...ntain by network administrators. For example you can:
use the same login/passwd to login on an Intranet and on your local computer.
give specific permissions to a group of user. For example some could access some specific page of your Intranet, or some specific directories on a shared drive.
get a...
What is the runtime performance cost of a Docker container?
... the kernel's support for different process namespaces, device namespaces, etc.; one namespace isn't inherently more expensive or inefficient than another, so what actually makes Docker have a performance impact is a matter of what's actually in those namespaces.
Docker's choices in terms of how ...
Why is processing a sorted array slower than an unsorted array?
...e accessed in memory-order. They have been allocated consecutively in RAM. CPUs love accessing memory sequentially because they can speculatively request the next cache line so it will always be present when needed.
When you are sorting the list you put it into random order because your sort keys a...