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Javascript equivalent of Python's zip function
..., unlike Python's version where the argument list is variadic. If you want all of these "features", see below. It takes just about 2 extra lines of code.
The following will mimic Python's zip behavior on edge cases where the arrays are not of equal size, silently pretending the longer parts of arra...
Makefile, header dependencies
...vided by the gnu preprocessor are a bit confusing. However, the removal of all directories from the build target with -MM is documented and not a bug [gpp]:
By default CPP takes the name of the main input file, deletes any
directory components and any file suffix such as ‘.c’, and appends ...
What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
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First of all, never use a for in loop to enumerate over an array. Never. Use good old for(var i = 0; i<arr.length; i++).
The reason behind this is the following: each object in JavaScript has a special field called prototype. Ever...
How can I remove non-ASCII characters but leave periods and spaces using Python?
...sub(r'[^\x00-\x7f]',r'', your-non-ascii-string)
See more examples here http://stackoverflow.com/questions/20078816/replace-non-ascii-characters-with-a-single-space/20079244#20079244
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How to make a valid Windows filename from an arbitrary string?
...: Bar" that I want to use as a filename, but on Windows the ":" char isn't allowed in a filename.
14 Answers
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MySQL, Check if a column exists in a table with SQL
...pecific column, and if not — create it. Otherwise do nothing. This is really an easy procedure in any enterprise-class database, yet MySQL seems to be an exception.
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Showing the stack trace from a running Python application
...gdb to the process and get a python stack trace with some gdb macros. Put http://svn.python.org/projects/python/trunk/Misc/gdbinit in ~/.gdbinit, then:
Attach gdb: gdb -p PID
Get the python stack trace: pystack
It's not totally reliable unfortunately, but it works most of the time.
Finally, attac...
WebKit issues with event.layerX and event.layerY
...move handler and your console explodes. :)
Here's a recent jQuery ticket: http://bugs.jquery.com/ticket/10531
UPDATE: This is fixed now if you upgrade to jQuery 1.7.
Please note that if upgrading jQuery doesn't fix the issue for you it may have something to do with used extensions / plugins as Ja...
iOS 5 Best Practice (Release/retain?)
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I am able to get ASIHttpRequest and SBJson working (I get 1 warning on struct usage in Reachability.h). I put the flag in all their implementation files.
– pixelfreak
Jun 24 '11 at 22:37
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How can you determine a point is between two other points on a line segment?
Let's say you have a two dimensional plane with 2 points (called a and b) on it represented by an x integer and a y integer for each point.
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