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Most efficient way to remove special characters from string
I want to remove all special characters from a string. Allowed characters are A-Z (uppercase or lowercase), numbers (0-9), underscore (_), or the dot sign (.).
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How do you find the current user in a Windows environment?
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The extra information with all the environment variables makes this a wonderful extended answer.
– bballdave025
May 21 at 19:32
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Haskell, Lisp, and verbosity [closed]
...answer:
almost anything you can do with macros you can do with a higher-order function (and I include monads, arrows, etc.), but it might require more thinking (but only the first time, and it's fun and you'll be a better programmer for it), and
the static system is sufficiently general that it n...
Bitwise operation and usage
...the data type, Python simply expands the width to cater for extra bits. In order to get the discarding behaviour in Python, you can follow a left shift with a bitwise and such as in an 8-bit value shifting left four bits:
bits8 = (bits8 << 4) & 255
With that in mind, another example of ...
How do I find all files containing specific text on Linux?
I'm trying to find a way to scan my entire Linux system for all files containing a specific string of text. Just to clarify, I'm looking for text within the file, not in the file name.
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How to import module when module name has a '-' dash or hyphen in it?
...appens with sys.modules, you don't need it to import itself), just getting all of the file's globals into your own scope, you can use execfile
# contents of foo-bar.py
baz = 'quux'
>>> execfile('foo-bar.py')
>>> baz
'quux'
>>>
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Recursively remove files
... Yes, that is what the print0 and the -0 to xargs is for. Normally it wouldn't handle spaces correctly, however with print0 it will print the filename with a null character at the end of the line, which xarg with -0 will then use to pass the full path to xargs without a chance of having...
Handling click events on a drawable within an EditText
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You should add v.getLeft() to x and v.getTop() to y in order to get the correct position.
– André
Mar 25 '13 at 14:16
3
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Has anyone actually implemented a Fibonacci-Heap efficiently?
...lemented a Fibonacci-Heap ? I did so a few years back, but it was several orders of magnitude slower than using array-based BinHeaps.
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Doing something before program exit
...t this works great for normal termination of the script, but it won't get called in all cases (e.g. fatal internal errors).
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