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Add up a column of numbers at the Unix shell

Given a list of files in files.txt , I can get a list of their sizes like this: 20 Answers ...
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What are the rules about using an underscore in a C++ identifier?

... C++ Standard: 17.4.3.1.2 Global names [lib.global.names] Certain sets of names and function signatures are always reserved to the implementation: Each name that contains a double underscore (__) or begins with an underscore followed by an uppercase letter (2.11) is reserved to the ...
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Compare two MySQL databases [closed]

...are data, use this instead; still be some MySQL4+ comments about character sets, etc. mysqldump --opt --compact --skip-extended-insert -u user -p db table > file.sql – zanlok Mar 6 '12 at 21:53 ...
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How dangerous is it to compare floating point values?

I know UIKit uses CGFloat because of the resolution independent coordinate system. 11 Answers ...
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Paste a multi-line Java String in Eclipse [duplicate]

... CNTL+M = Make code. In the View > Toad Options you can set what format the 'code' is in. Java for example is there. – checketts Feb 16 '12 at 21:53 add a c...
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Can I combine :nth-child() or :nth-of-type() with an arbitrary selector?

...ctor ? For example, I want to select every odd table row, but within a subset of the rows: 7 Answers ...
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How to use if - else structure in a batch file?

...as, all are quite ugly but hey, this is (or at least was) DOS! @echo off set one=1 set two=2 REM Example 1 IF %one%_%two%==1_1 ( echo Example 1 fails ) ELSE IF %one%_%two%==1_2 ( echo Example 1 works correctly ) ELSE ( echo Example 1 fails ) REM Example 2 set test1result=0 set test2r...
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grep, but only certain file extensions

...ts to grep certain directories, but these directories contain all sorts of file types. 11 Answers ...
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How to play a local video with Swift?

... U can setup AVPlayer in another way, that open for u full customization of your video Player screen Swift 2.3 Create UIView subclass for playing video (basically u can use any UIView object and only needed is AVPlayerLayer. I se...
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What is the difference between == and Equals() for primitives in C#?

... Primitives types override the base object.Equals(object) and return true if the boxed object is of the same type and value. (Note that it will also work for nullable types; non-null nullable types always box to an instance of the underlying type.) Since newAge is a short, its Equals(object) method ...