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How to add leading zeros for for-loop in shell? [duplicate]

... @Matt What exactly does not work? As long as you have a recent enough version of bash this works fine. – Adrian Frühwirth Jan 10 '19 at 8:34 ...
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What are sessions? How do they work?

...er) that contains the authenticated user id - that way your code will know what user it is talking to. share | improve this answer | follow | ...
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What does the KEY keyword mean?

..._id) REFERENCES auth_user (id) then you might additionally want to specify what INDEX is used (HASH vs BTREE). This example shows KEY and INDEX aren't synonyms. – oneloop Jan 31 '17 at 12:19 ...
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what is the difference between const_iterator and iterator? [duplicate]

What is difference between these two regarding implementation inside STL. what is the difference regarding performance? I guess when we are traversing the vector in "read only wise", we prefer const_iterator , right? ...
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Git command to show which specific files are ignored by .gitignore

...to be upvoted) git clean -ndX works on older gits, displaying a preview of what ignored files could be removed (without removing anything) Also interesting (mentioned in qwertymk's answer), you can also use the git check-ignore -v command, at least on Unix (doesn't work in a CMD Windows session)...
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What's the result of += in C and C++?

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PowerShell script to return versions of .NET Framework on a machine?

What would a PowerShell script be to return versions of the .NET Framework on a machine? 16 Answers ...
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What is the main difference between Inheritance and Polymorphism?

...a and both definitions seemed to be exactly the same. I was just wondering what the MAIN difference was for my own piece of mind. I know there are a number of similar questions to this but, none I have seen which provide a definitive answer. ...
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What's the difference between parenthesis $() and curly bracket ${} syntax in Makefile?

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How to debug Ruby scripts [closed]

...way to single-step code with pry? I couldn't find how to do it; and that's what I expect of a debugger. – jpetazzo Jul 6 '16 at 4:49 2 ...