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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?

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How do you know what to test when writing unit tests? [closed]

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Why 0 is true but false is 1 in the shell?

The above will output 1 , which is contradictory with all other programming languages I know. 10 Answers ...
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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL

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JavaScript function similar to Python range()

... start = 0; } if (typeof step == 'undefined') { step = 1; } if ((step > 0 && start >= stop) || (step < 0 && start <= stop)) { return []; } var result = []; for (var i = start; step > 0 ? i < stop : i > stop; i += ...
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Position of least significant bit that is set

... 170 Bit Twiddling Hacks offers an excellent collection of, er, bit twiddling hacks, with performan...
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How to compare two strings in dot separated version format in Bash?

...ny way to compare such strings on bash, e.g.: 2.4.5 and 2.8 and 2.4.5.1 ? 29 Answers ...
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Numpy argsort - what is it doing?

... 146 According to the documentation Returns the indices that would sort an array. 2 is the i...
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Count work days between two dates

...CLARE @StartDate DATETIME DECLARE @EndDate DATETIME SET @StartDate = '2008/10/01' SET @EndDate = '2008/10/31' SELECT (DATEDIFF(dd, @StartDate, @EndDate) + 1) -(DATEDIFF(wk, @StartDate, @EndDate) * 2) -(CASE WHEN DATENAME(dw, @StartDate) = 'Sunday' THEN 1 ELSE 0 END) -(CASE WHEN DATENAME(d...
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How can I scale the content of an iframe?

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