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Why does the C# compiler go mad on this nested LINQ query?

...equivalent code from yours, after lambdas have been analyzed, compiles without issue: static void Main() { var x = Enumerable.Range(0, 1).Sum(a); } private static int a(int a) { return Enumerable.Range(0, 1).Sum(b); } private static int b(int b) { return Enumerable.Range(0, 1).Sum(c); ...
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Hidden Features of JavaScript? [closed]

... Well == and === are not about dynamic typing. == does type coersion, which is a different beast. If you know, that you want to cast to string/number/etc, then you shold do that explicitly. – Rene Saarsoo Jun 5 '0...
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Green Bars in Visual Studio 2010

... IN SUMMARY... Start out blank. Make a change = Yellow. Save the change = Green. Undo = Orange. Change the line again = Yellow. share | impr...
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Boolean.hashCode()

...y? Maps can contain booleans together with other objects. Also, as pointed out by Drunix, a common way to create hash functions of composite objects is to reuse the subcomponents hash code implementations in which case it's good to return large primes. Related questions: Why use a prime number in...
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How to capitalize the first character of each word in a string

... If you're only worried about the first letter of the first word being capitalized: private String capitalize(final String line) { return Character.toUpperCase(line.charAt(0)) + line.substring(1); } ...
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How to check if an array field contains a unique value or another array in MongoDB?

... Try this out: db.blogpost.find({ 'tags' : 'tag1'}); //1 db.blogpost.find({ 'tags' : { $all : [ 'tag1', 'tag2' ] }}); //2 db.blogpost.find({ 'tags' : { $in : [ 'tag3', 'tag4' ] }}); //3 ...
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Where is the 'tests output pane'?

Where is the 'Tests Output Pane'? I can't find it anywhere in Visual Studio. I found 'test explorer' but it doesn't give any details. ...
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Reimport a module in python while interactive

...ave edited the module source file using an external editor and want to try out the new version without leaving the Python interpreter. If running Python 3.4 and up, do import importlib, then do importlib.reload(nameOfModule). Don't forget the caveats of using this method: When a module is relo...
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Do I really need to encode '&' as '&'?

...ever, it's better just to escape all instances of this symbol than worry about which ones should be and which ones don't need to be. Keep this point in mind; if you're not escaping & to &, it's bad enough for data that you create (where the code could very well be invalid), you might al...
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C# Sortable collection which allows duplicate keys

...d_first, first); Assert.AreEqual(expected_last, last); } The output: 1:cab 1:coconut 1:car 1:cat 2:door 2:dog 3:elephant share | improve this answer | follow ...