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Is a LINQ statement faster than a 'foreach' loop?

I am writing a Mesh Rendering manager and thought it would be a good idea to group all of the meshes which use the same shader and then render these while I'm in that shader pass. ...
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Retain cycle on `self` with blocks

I'm afraid this question is pretty basic, but I think it's relevant to a lot of Objective-C programmers who are getting into blocks. ...
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belongs_to through associations

...tion cannot have a :through option. You're better off caching the question_id on Choice and adding a unique index to the table (especially because validates_uniqueness_of is prone to race conditions). If you're paranoid, add a custom validation to Choice that confirms that the answer's question_id ...
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Format of the initialization string does not conform to specification starting at index 0

...r 2012 Standard Security Server=myServerAddress;Database=myDataBase;User Id=myUsername;Password=myPassword; Trusted Connection Server=myServerAddress;Database=myDataBase;Trusted_Connection=True; Connection to a SQL Server instance The server/instance name syntax used in the server option is ...
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Get list of all routes defined in the Flask app

... BuildError: ('DeleteEvent', {}, None). Instead, to get the url I just did url = rule.rule. Any idea why your method doesn't work for me? – J-bob Nov 11 '12 at 19:57 ...
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Measure the time it takes to execute a t-sql query

... looked for Sql Profiler doc on how to do this but couldn't find doc that didn't require hours of reading. Can you recommend a "Profiler for Dummies" link? – TheMoot Jul 26 '12 at 18:05 ...
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How can I reverse a NSArray in Objective-C?

...ing category to your code: @implementation NSMutableArray (Reverse) - (void)reverse { if ([self count] <= 1) return; NSUInteger i = 0; NSUInteger j = [self count] - 1; while (i < j) { [self exchangeObjectAtIndex:i withObjectAtIndex:j]; ...
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OnCreateOptionsMenu() not called in Fragment

... I made the change,but app crashes with 11-27 01:55:34.468: E/AndroidRuntime(12294): Caused by: java.lang.ClassCastException: com.android.internal.view.menu.MenuItemImpl cannot be cast to android.widget.SearchView – Android_programmer_office Nov 26 '13 ...
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How to update a menu item shown in the ActionBar?

...nuItems to the Menu. I have one MenuItem that I've set the attribute android:showAsAction to have it show as a button on the ActionBar. Which works fine. ...
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Padding between ActionBar's home icon and title

... definition, for instance like this in res/style.xml: <item name="android:actionBarStyle">@style/MyActionBar</item> <style name="MyActionBar" parent="@android:style/Widget.Holo.Light.ActionBar"> <item name="android:background">#3f51b5</item> <item n...