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Copy file or directories recursively in Python

... I suggest you first call shutil.copytree, and if an exception is thrown, then retry with shutil.copy. import shutil, errno def copyanything(src, dst): try: shutil.copytree(src, dst) except OSError as exc: # python >2.5 ...
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How do I make a textbox that only accepts numbers?

... with this two event handlers on a standard TextBox: private void textBox1_KeyPress(object sender, KeyPressEventArgs e) { if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) && (e.KeyChar != '.')) { e.Handled = true; } // only allow one de...
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Dynamically load a JavaScript file

How can you reliably and dynamically load a JavaScript file? This will can be used to implement a module or component that when 'initialized' the component will dynamically load all needed JavaScript library scripts on demand. ...
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Cannot run Eclipse; JVM terminated. Exit code=13

... Okey, I solve it. I just reinstall JDK 64-bit, re-extact eclipse-64bit and edit eclipse.ini again. – Prince OfThief Feb 9 '11 at 14:13 ...
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Co-variant array conversion from x to y may cause run-time exception

...js[0] = new Foo(); // again legal, with runtime exception In C#, you are allowed to reference an array of objects (in your case, LinkLabels) as an array of a base type (in this case, as an array of Controls). It is also compile time legal to assign another object that is a Control to the array. Th...
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What is the aspnet_client folder for under the IIS structure?

... In addition to what others have said, it's usually created by the aspnet_regiis tool, which can be (re-)run by things like Windows Update/AddRemove Windows components/IIS. So sometimes even if you do delete it, it can come back randomly. There may be a way to stop this ...
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C# pattern to prevent an event handler hooked twice [duplicate]

...ution and the best one (considering performance) is: private EventHandler _foo; public event EventHandler Foo { add { _foo -= value; _foo += value; } remove { _foo -= value; } } No Linq using required. No need to check for null before cancelling a subscrip...
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How to deploy a war file in Tomcat 7

...RL without the resourceName because it won't work if there is no file like index.html, or if there is no url pattern like "/" or "/*" in web.xml. The available main paths are here: [<protocol>://]localhost:<port>/manager/html (E.g.: http://localhost:8080/manager/html) and they have true...
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What are 'closures' in .NET?

...thod and the variable j [CompilerGenerated] private sealed class <>c__DisplayClass2 { public <>c__DisplayClass2(); public void <fillFunc>b__0() { Console.Write("{0} ", this.j); } public int j; } for the function: static void fillFunc(int count) { ...
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Copying text with color from Notepad++

... There's a plugin called NppExport that does just that in a couple of available formats. If you don't have NppExport yet, you can download it through the inbuilt plugin manager. update As of version 6.1.5 (or maybe earlier) this ships with a s...