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@property retain, assign, copy, nonatomic in Objective-C
...to Objective-C can someone give me an overview of the retain, assign, copy and any others I'm missing, that follow the @property directive? What are they doing and why would I want to use one over another?
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Why do most fields (class members) in Android tutorial start with `m`?
... about camel case rules, but I'm confused with this m rule. What does it stand for? I'm a PHP developer. "We" use first letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on.
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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...consider using the before_validation callback.
– tokland
Jul 15 '10 at 10:13
44
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Using %f with strftime() in Python to get microseconds
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Both support %z in Python 3 :-) here's datetime and then time
– adamnfish
Feb 13 '17 at 17:55
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How would one write object-oriented code in C? [closed]
...esign pattern known as "object orientation"; same with garbage collection, and other such. They are so ingrained now, we tend to forget, when they were first being devised, it was in much the same way as with what we think of as design patterns today
– Dexygen
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How to check if a file is a valid image file?
...r most image formats but not all. as per my original problem with svg, xcf and psd files, well those are undetected in imghdr as well
– Sujoy
May 26 '09 at 12:54
2
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优化InnerHTML操作 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...如下：
<html>
<head>
<title>test</title>
</head>
<body>
<div>
<p>data<p>
</div>
<script>
document.onmousedown = function() {
for (var i = 0; i < 10; i++) {
var p = document.createElement("p");
p.appendChild(document.createTextNode(Math.random()));
d...
How to programmatically send SMS on the iPhone?
Does anybody know if it's possible, and how, to programmatically send a SMS from the iPhone , with the official SDK / Cocoa Touch?
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What is the best practice for dealing with passwords in git repositories?
I've got a little Bash script that I use to access twitter and pop up a Growl notification in certain situations. What's the best way to handle storing my password with the script?
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线程访问窗口资源的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...做AssertValid时，会因为以下几种原因导致断言失败:
1. CHandleMap* pMap = afxMapHWND(); ASSERT(pMap != NULL)失败;该线程没有映射表。原因这个线程只是工作线程（没有主窗口），并不是用户界面线程（利用界面线程可以在一个进程的...