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Why not use exceptions as regular flow of control?

To avoid all standard-answers I could have Googled on, I will provide an example you all can attack at will. 24 Answers ...
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Is there a way to make mv create the directory to be moved to if it doesn't exist?

So, if I'm in my home directory and I want to move foo.c to ~/bar/baz/foo.c , but those directories don't exist, is there some way to have those directories automatically created, so that you would only have to type ...
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JavaScript OR (||) variable assignment explanation

Given this snippet of JavaScript... 12 Answers 12 ...
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Multiple linear regression in Python

I can't seem to find any python libraries that do multiple regression. The only things I find only do simple regression. I need to regress my dependent variable (y) against several independent variables (x1, x2, x3, etc.). ...
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Why '&&' and not '&'?

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How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?

Is there a way to call a block with a primitive parameter after a delay, like using performSelector:withObject:afterDelay: but with an argument like int / double / float ? ...
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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.

What is the best practice if I want to require a relative file in Ruby and I want it to work in both 1.8.x and >=1.9.2? ...
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Is it possible to create a multi-line string variable in a Makefile

I want to create a makefile variable that is a multi-line string (e.g. the body of an email release announcement). something like ...
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Difference between __str__ and __repr__?

What is the difference between __str__ and __repr__ in Python? 23 Answers 23 ...
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Is there a way to get a collection of all the Models in your Rails app?

Is there a way that you can get a collection of all of the Models in your Rails app? 28 Answers ...