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Is using 'var' to declare variables optional? [duplicate]

... use var the variable is declared within the scope you are in (e.g. of the function). If you don't use var, the variable bubbles up through the layers of scope until it encounters a variable by the given name or the global object (window, if you are doing it in the browser), where it then attaches. ...
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How do I read text from the (windows) clipboard from python?

...) win32clipboard.EmptyClipboard() win32clipboard.SetClipboardText('testing 123') win32clipboard.CloseClipboard() # get clipboard data win32clipboard.OpenClipboard() data = win32clipboard.GetClipboardData() win32clipboard.CloseClipboard() print data An important reminder from the documentation: ...
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Should programmers use SSIS, and if so, why? [closed]

...ou'll get much more return on your training. Also finding and maintaining functionality in a VS solution is so very much easier. Unit testing with VS is easy. All I need to do is to check in the source in Subversion, and verify how it loaded. Unit testing SSIS packages is very involved to put it mi...
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Split string every nth character?

... >>> line = '1234567890' >>> n = 2 >>> [line[i:i+n] for i in range(0, len(line), n)] ['12', '34', '56', '78', '90'] share | ...
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Why would I want stage before committing in Git?

...ther than adding it and then commiting it? – kiwicomb123 Aug 1 '17 at 16:27 1 ...
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Putting HTML inside Html.ActionLink(), plus No Link Text?

... Craig StuntzCraig Stuntz 123k1212 gold badges244244 silver badges266266 bronze badges ...
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Use dynamic variable names in JavaScript

... a = 'varname'; str = a+' = '+'123'; eval(str) alert(varname); Try this... share | improve this answer | follow |...
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How do I check if an object has a specific property in JavaScript?

...d for ( var prop in obj ) { document.writeln( "Object1: " + prop ); } function Class(){ this.a = undefined; this.b = null; this.c = false; } Class.prototype = { a: undefined, b: true, c: true, d: true, e: true }; var obj2 = new Class(); // a, b, c, d, e found ...
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What are the effects of exceptions on performance in Java?

...st too long to post here. So let me summarize here and refer you to http://www.fuwjax.com/how-slow-are-java-exceptions/ for the gritty details. The real question here is not "How slow are 'failures reported as exceptions' compared to 'code that never fails'?" as the accepted response might have you...
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Color different parts of a RichTextBox string

...is, only AppendText(string text) with WinForms – vaso123 Jan 26 at 15:09  |  show 1 more comment ...