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C++ STL Vectors: Get iterator from index?
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How to hide element using Twitter Bootstrap and show it using jQuery?
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FlipperPA
10.1k33 gold badges2525 silver badges4949 bronze badges
answered Feb 3 '15 at 8:18
Evan CarrollEvan Carroll
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PHP function to get the subdomain of a URL
...ed by reference" by adding double parenthesis.
EDIT 2: Starting from PHP 5.4 you can simply do:
explode('.', 'en.example.com')[0];
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How to check if hex color is “too black”?
...rgb >> 0) & 0xff; // extract blue
var luma = 0.2126 * r + 0.7152 * g + 0.0722 * b; // per ITU-R BT.709
if (luma < 40) {
// pick a different colour
}
EDIT
Since May 2014 tinycolor now has a getBrightness() function, albeit using the CCIR601 weighting factors instead of the ITU...
C++ stl stack/queue 的使用方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
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main()
{
priority_queue<T> q;
q.push(T(4,4,3));
q.push(T(2,2,5));
q.push(T(1,5,4));
q.push(T(3,3,6));
while (!q.empty())
{
T t = q.top(); q.pop();
cout << t.x << " " << t.y << " " << t.z << endl;
}
return 1;
}
输出结果为(注意是按...
php each与list的用法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...],'~',$tmp[1],'<br />';
}
/*
返回
0~你
1~若
2~安
3~好
4~便
5~是
6~晴
7~天
*/
?>
2.list的用法
先看api是怎么说的：像 array() 一样，这不是真正的函数，而是语言结构。list()用一步操作给一组变量进行赋值。
来看一个例子：
<?p...
Logical XOR operator in C++?
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553
The != operator serves this purpose for bool values.
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Programmatically create a UIView with color gradient
...ive-C:
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
CAGradientLayer *gradient = [CAGradientLayer layer];
gradient.frame = view.bounds;
gradient.colors = @[(id)[UIColor whiteColor].CGColor, (id)[UIColor blackColor].CGColor];
[view.layer insertSublayer:gradient atIndex:0...
Floating elements within a div, floats outside of div. Why?
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405
The easiest is to put overflow:hidden on the parent div and don't specify a height:
#parent { o...
Is there a documented way to set the iPhone orientation?
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answered Dec 5 '09 at 0:03
John KJohn K
28433 silver badges77 bronze badges
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