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Finding all possible combinations of numbers to reach a given sum
...subset_sum(numbers, target, partial=[]):
s = sum(partial)
# check if the partial sum is equals to target
if s == target:
print "sum(%s)=%s" % (partial, target)
if s >= target:
return # if we reach the number why bother to continue
for i in range(len(numbers...
How much faster is Redis than mongoDB?
...s, features and operations (and maybe showing how the factor changes with different configurations and operations), etc, is Redis 10x faster?, 2x faster?, 5x faster?
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How to make a python, command-line program autocomplete arbitrary things NOT interpreter
...t readline
def completer(text, state):
options = [i for i in commands if i.startswith(text)]
if state < len(options):
return options[state]
else:
return None
readline.parse_and_bind("tab: complete")
readline.set_completer(completer)
The official module docs aren't ...
When to use single quotes, double quotes, and backticks in MySQL
...write queries. I also understand the importance of being consistent. Until now, I have randomly used single quotes, double quotes, and backticks without any real thought.
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How do I force git to use LF instead of CR+LF under windows?
...
By now the .gitattributes lines should read: *.txt text eol=lf as per git-scm.com/docs/gitattributes
– grandchild
Jan 9 at 16:41
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How to remove the querystring and get only the url?
...nstead of rebuilding the url only to parse it again. would give another +1 if possible, for concision.
– ericsoco
Sep 30 '12 at 19:48
8
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Defining a variable with or without export
...$ ALICE="Alice"; export BOB="Bob"; env | grep "ALICE\|BOB"
BOB=Bob
So, now it should be as clear as is the summer's sun! Thanks to Brain Agnew, alexp, and William Prusell.
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Cleanest way to get last item from Python iterator
... is precisely what None is for. Are you suggesting that some function-specific default value could even be correct? If the iterator doesn't actually iterate, then an out-of-band value is more meaningful than some misleading function-specific default.
– S.Lott
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Format floats with standard json module
...e FLOAT_REPR so that EVERY representation of a float is under your control if you wish it to be; but unfortunately that's not how the json package was designed:-(.
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static constructors in C++? I need to initialize private static objects
...ts private members. I could add code in the constructor that checks to see if the vector is initialized, and initialize it if it's not, but that introduces many necessary checks and doesn't seem like the optimal solution to the problem.
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