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What's the hardest or most misunderstood aspect of LINQ? [closed]

...alize that many LINQ extension methods such as Single(), SingleOrDefault() etc have overloads that take lambdas. You can do : Single(x => x.id == id) and don't need to say this - which some bad tutorial got me in the habit of doing Where(x => x.id == id).Single() ...
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NUnit vs. Visual Studio 2008's test projects for unit testing [closed]

... features. There are extensions being developed for NUnit, like row-tests, etc. Visual Studio tests take a long time to start up for some reason. This is better in Visual Studio 2008, but it is still too slow for my taste. Quickly running a test to see if you didn't break something can take too lo...
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Rails: How does the respond_to block work?

... a bit. The entire class (responder) becomes the method implementation. In order to leverage method_missing, we need an instance of the class, so we're obliged to pass a callback into which they pass the method-like object. For someone who has coded in C-like languages for 20 some years, this is ver...
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Inserting image into IPython notebook markdown

... the base path, it would be <img src="files/image.png">, and subdirs etc. are also available: <img src="files/subdir/image.png">, etc. Update: starting with IPython 2.0, the files/ prefix is no longer needed (cf. release notes). So now the solution <img src="image.png"> simply wor...
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'POCO' definition

...ing about the question :) Class then fits POJO, POVBO POC#O, POC++O, PORO, etc. – David Mohundro Oct 30 '08 at 12:51 14 ...
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iOS 7 status bar back to iOS 6 default style in iPhone app?

...rate: there is no way to return to iOS 6 style status bar layout logic. In order to approximate this, you have to move all the view controllers of your app into a container view that is offset by 20 points from the top of the screen, leaving an intentionally black view behind the status bar to simul...
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How does zip(*[iter(s)]*n) work in Python?

...erences to the same iterator and zip() makes 3-tuples of the integers—in order—from each reference to the iterator: 1,2,3,4,5,6,7,8,9 1,2,3,4,5,6,7,8,9 1,2,3,4,5,6,7,8,9 ^ ^ ^ ^ ^ ^ ^ ...
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How to filter multiple values (OR operation) in angularJS

...rayOfObjectswithKeys | filterMultiple:{key1:['value1','value2','value3',...etc],key2:'value4',key3:[value5,value6,...etc]} Here is a fiddle example with implementation of above "filterMutiple" custom filter. :::Fiddle Example::: ...
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When NOT to use yield (return) [duplicate]

...res. For example, I often see this: public static IEnumerable<T> PreorderTraversal<T>(Tree<T> root) { if (root == null) yield break; yield return root.Value; foreach(T item in PreorderTraversal(root.Left)) yield return item; foreach(T item in PreorderTraver...
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Block Declaration Syntax List

...on Syntaxes Throughout, let return_type be the type of object/primitive/etc. you'd like to return (commonly void) blockName be the variable name of the block you're creating var_type be the type object/primitive/etc. you'd like to pass as an argument (leave blank for no parameters) varName be the...