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In the shell, what does “ 2>&1 ” mean?
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edited May 9 '18 at 20:18
Ricardo
2,45811 gold badge2121 silver badges4141 bronze badges
answered M...
Show Youtube video source into HTML5 video tag?
...irplay="allow"
data-youtube-id="N9oxmRT2YWw"
src="http://v20.lscache8.c.youtube.com/videoplayback?sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Cratebypass%2Coc%3AU0hPRVRMVV9FSkNOOV9MRllD&itag=43&ipbits=0&signature=D2BCBE2F115E68C5FF97673F1D797F3C3E3BFB99.59252109...
How to open a local disk file with JavaScript?
...g FileReader:
function readSingleFile(e) {
var file = e.target.files[0];
if (!file) {
return;
}
var reader = new FileReader();
reader.onload = function(e) {
var contents = e.target.result;
displayContents(contents);
};
reader.readAsText(file);
}
function displayContent...
The cast to value type 'Int32' failed because the materialized value is null
...where there can be unexpected nulls in different places. ...DefaultIfEmpty(0).Sum(0) can help in this (quite simple) case, where there might be no elements and sql's SUM returns null whereas c# expect 0.
A more general approach is to use ?? which will be translated to COALESCE whenever there is a r...
What does %>% mean in R [duplicate]
...Length Petal.Width Species
1 5.1 3.5 1.4 0.2 setosa
2 4.9 3.0 1.4 0.2 setosa
3 4.7 3.2 1.3 0.2 setosa
4 4.6 3.1 1.5 0.2 setosa
5 5.0 3.6 ...
Why and How to avoid Event Handler memory leaks?
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answered Dec 24 '10 at 14:32
Jon SkeetJon Skeet
1211k772772 gold badges85588558 silver badges88218821 bronze badges
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jQuery table sort
... if( $.text([a]) == $.text([b]) )
return 0;
return $.text([a]) > $.text([b]) ?
inverse ? -1 : 1
: inverse ? 1 : -1;
}, function(){
// parentNode is the element we want to move
...
乐高机器人®组件 · App Inventor 2 中文网
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GetDistance 获取距离()
返回当前距离（厘米），值为0到254之间，如果无法读取距离则返回-1。
Nxt颜色传感器
一个为乐高MINDSTORMS NXT机器人上的颜色传感器提供高级接口的组件。
属性
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Creating an array of objects in Java
...e this:
a1 = new A();
Similarly, with the array you need to do this:
a[0] = new A();
...before using it.
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