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What is the difference between range and xrange functions in Python 2.X?
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836
In Python 2.x:
range creates a list, so if you do range(1, 10000000) it creates a list in mem...
NSUserDefaults - How to tell if a key exists
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382
objectForKey: will return nil if it doesn't exist.
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Do I need all three constructors for an Android custom view?
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edited Sep 1 '16 at 23:29
mbonnin
5,81633 gold badges2929 silver badges5050 bronze badges
answered ...
Convert XLS to CSV on command line
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Lankymart
13.9k55 gold badges6060 silver badges145145 bronze badges
answered Dec 7 '09 at 14:22
ScottFScottF
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Sending command line arguments to npm script
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Edit 2014.10.30: It's possible to pass args to npm run as of npm 2.0.0
The syntax is as follows:
npm run <command> [-- <args>]
Note the necessary --. It is needed to separate the params passed to npm command itself and para...
How to wrap async function calls into a sync function in Node.js or Javascript?
...ncFunction(){
var ret;
setTimeout(function(){
ret = "hello";
},3000);
while(ret === undefined) {
require('deasync').runLoopOnce();
}
return ret;
}
var output = AnticipatedSyncFunction();
//expected: output=hello (after waiting for 3 sec)
console.log("output="+output);
//a...
How to copy a directory using Ant
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edited Jan 18 '18 at 23:02
isapir
12.5k66 gold badges7272 silver badges8686 bronze badges
answered N...
界面高级组件 · App Inventor 2 中文网
...。渐变方向 取 0-7：0 左到右、1 左下到右上、2 下到上、3 右下到左上、4 右到左、5 右上到左下、6 上到下、7 左上到右下。已设置的圆角和边框保留；布局在设计器里设的背景图片会被新颜色取代。
设置边框(组件,边框宽度,...
SQL Server: Make all UPPER case to Proper Case/Title Case
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edited Mar 21 '18 at 12:30
kabirbaidhya
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answer...