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getting exception “IllegalStateException: Can not perform this action after onSaveInstanceState”

... @t0mm13b: to add more as 600 chars are not enough, you have to investigate first what is really causing this for you. You have also to realize that above is an ugly hack and I am not taking any responsibility if it runs or not (for me was the best soluti...
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What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]

...tf8_general_ci is fine only for Russian and Bulgarian subset of Cyrillic. Extra letters used in Belarusian, Macedonian, Serbian, and Ukrainian are sorted not well. The cost of utf8_unicode_ci is that it is a little bit slower than utf8_general_ci. But that’s the price you pay for correctness...
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How to detect a Christmas Tree? [closed]

... threshold.process(tree.clone(), tree); } } public static void main(String[] args) { new ChristmasTree(); } } In the second step, the brightest points in the image are dilated in order to form shapes. The result of this process is the probable shape of the objects with significant brigh...
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How to create a responsive image that also scales up in Bootstrap 3

... put the .col class on the image will do the trick - however this gives it extra padding along with any other attributes associated with the class such as float left, however these can be cancelled by say for example a no padding class as an addition. ...
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How can I switch themes in Visual Studio 2012

... For extra themes, including making VS 2012 look like VS 2010 see: http://visualstudiogallery.msdn.microsoft.com/366ad100-0003-4c9a-81a8-337d4e7ace05 shar...
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Converting PKCS#12 certificate into PEM using OpenSSL

...the above example, I get the following: "TypeError: initializer for ctype 'char' must be a bytes of length 1, not str" Is there something wrong with my password – getaglow Nov 29 '18 at 15:29 ...
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T-SQL datetime rounded to nearest minute and nearest hours with using functions

... "Rounded" down as in your example. This will return a varchar value of the date. DECLARE @date As DateTime2 SET @date = '2007-09-22 15:07:38.850' SELECT CONVERT(VARCHAR(16), @date, 120) --2007-09-22 15:07 SELECT CONVERT(VARCHAR(13), @date, 120) --2007-09-22 15 ...
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How to compare two colors for similarity/difference

...For posterity, here's the relevant C code: typedef struct { unsigned char r, g, b; } RGB; double ColourDistance(RGB e1, RGB e2) { long rmean = ( (long)e1.r + (long)e2.r ) / 2; long r = (long)e1.r - (long)e2.r; long g = (long)e1.g - (long)e2.g; long b = (long)e1.b - (long)e2.b;...
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MongoDB SELECT COUNT GROUP BY

... I need some extra operation based on the result of aggregate function. Finally I've found some solution for aggregate function and the operation based on the result in MongoDB. I've a collection Request with field request, source, status...
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Why are preprocessor macros evil and what are the alternatives?

...can't be debugged. When you have a macro that translates to a number or a string, the source code will have the macro name, and many debuggers, you can't "see" what the macro translates to. So you don't actually know what is going on. Replacement: Use enum or const T For "function-like" macros,...