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How can I output leading zeros in Ruby?
I'm outputting a set of numbered files from a Ruby script. The numbers come from incrementing a counter, but to make them sort nicely in the directory, I'd like to use leading zeros in the filenames. In other words
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What is the difference between an expression and a statement in Python?
...gnment statement of x=2 inside of the function call of func(x=2) in Python sets the named argument a to 2 only in the call to func and is more limited than the C example.
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Safe (bounds-checked) array lookup in Swift, through optional bindings?
... was): for Collection types where the Indices are not contiguous. E.g. for Set instances, if we were to access a set element by index (SetIndex<Element>), we can run into runtime exceptions for indices that are >= startIndex and < endIndex, in which case the safe subscript fails (see e.g...
Regex Pattern to Match, Excluding when… / Except between
...something more complete that I can 100% understand and reuse; that's why I set a bounty. Also ideas that work everywhere are better for me than not standard syntax like \K
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Get IP address of visitors using Flask for Python
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This works when you set the appropriate fields in the config of your reverse proxy. Used in production.
– drahnr
Feb 27 '15 at 19:41
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jQuery trigger file input
...at the security restriction is only when the <input type="file"/> is set to display:none; or is visbilty:hidden.
So i tried positioning it outside the viewport by setting position:absolute and top:-100px; and voilà it works.
see http://jsfiddle.net/DSARd/1/
call it a hack.
Hope that works...
Are 2^n and n*2^n in the same time complexity?
...an't take the limit of O(f(x)/g(x)); big-O notification is shorthand for a set of functions, not a single function whose value you can limit. However, I think it's true that you can show that f(x) = O(g(x)) if lim(x->infinity) f(x)/g(x) exists.
– chepner
Feb...
Windows 7 SDK installation failure
...file%\AppData\Local\Temp\ or %temp%. The log file is most likely called SDKSetup_7.xxxxx.log.
Solution: Uninstall any existing Visual C++ 2010 redistributable.
I just had this problem, and I looked at the solution at Ctrl+F5, Fix Problem Installing Windows SDK for Windows 7, but it didn't work.
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How do I set vertical space between list items?
...tags. That will create space between the li and you can use line-height to set the spacing to the text within the li tags.
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Best general SVN Ignore Pattern?
... Of course, the usual pattern of *.bin *.bak *.pdb *.suo etc etc must be set up front, I agree. But once you set the ignore properties on a repository folder, they do effectively become shared - although I am aware this is not exactly what you meant.
– petr k.
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