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Execution time of C program
...which could be anywhere from 1 second to several minutes). I have searched for answers, but they all seem to suggest using the clock() function, which then involves calculating the number of clocks the program took divided by the Clocks_per_second value.
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In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...g out of the way first. The explanation that yield from g is equivalent to for v in g: yield v does not even begin to do justice to what yield from is all about. Because, let's face it, if all yield from does is expand the for loop, then it does not warrant adding yield from to the language and prec...
Getting the last argument passed to a shell script
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This is a bit of a hack:
for last; do true; done
echo $last
This one is also pretty portable (again, should work with bash, ksh and sh) and it doesn't shift the arguments, which could be nice.
It uses the fact that for implicitly loops over the ar...
Double Negation in C++
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@lzprgmr: explicit cast causes a "performance warning" on MSVC. Using !! or !=0 solves the problem, and among the two I find the former cleaner (since it will work on a greater amount of types). Also I agree that there is no reason to use either in the code in q...
Which is faster : if (bool) or if(int)?
...helps to illuminate that when choosing a variable type, you're choosing it for two potentially competing purposes, storage space vs. computational performance.
– Triynko
Apr 27 '11 at 18:20
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How to “properly” create a custom object in JavaScript?
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There are two models for implementing classes and instances in JavaScript: the prototyping way, and the closure way. Both have advantages and drawbacks, and there are plenty of extended variations. Many programmers and libraries have different ap...
Local variables in nested functions
...tead, create a new function scope, or bind the variable as a default value for a keyword parameter.
Partial function example, using functools.partial():
from functools import partial
def pet_function(cage=None):
print "Mary pets the " + cage.animal + "."
yield (animal, partial(gotimes, part...
Python exit commands - why so many and when should each be used?
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Let me give some information on them:
quit() simply raises the SystemExit exception.
Furthermore, if you print it, it will give a message:
>>> print (quit)
Use quit() or Ctrl-Z plus Return to exit
>>>
This functionalit...
How to parse JSON in Scala using standard Scala classes?
... "completeness": 0.9
}]
}
""".stripMargin
val result = for {
Some(M(map)) <- List(JSON.parseFull(jsonString))
L(languages) = map("languages")
M(language) <- languages
S(name) = language("name")
B(active) = language("is_active")
D(completeness) = lang...
How to add title to subplots in Matplotlib?
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For anyone having problems with the font size for a histogram, oddly enough reducing the number of bins let me increase it. Went from 500 to 100.
– mLstudent33
Feb 19 at 8:56
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