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How to call an external command?
... Hello World").read()
but it is nice to have all of the options there in one unified class instead of 4 different popen functions. See the documentation.
The call function from the subprocess module. This is basically just like the Popen class and takes all of the same arguments, but it simply w...
Check if a method exists
...or(someMethod:withParams:)]
This may be useful if you would like to call one constructor or another one depending on this (I mean, before having the instance itself).
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Multiple Models in a single django ModelForm?
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You can just show both forms in the template inside of one <form> html element. Then just process the forms separately in the view. You'll still be able to use form.save() and not have to process db loading and saving yourself.
In this case you shouldn't need it, but if yo...
python numpy ValueError: operands could not be broadcast together with shapes
...hape (97,2)
y, shape (2,1)
With Numpy arrays, the operation
X * y
is done element-wise, but one or both of the values can be expanded in one or more dimensions to make them compatible. This operation are called broadcasting. Dimensions where size is 1 or which are missing can be used in broadca...
What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
...general_ci is a very simple — and on Unicode, very broken — collation, one that gives incorrect results on general Unicode text. What it does is:
converts to Unicode normalization form D for canonical decomposition
removes any combining characters
converts to upper case
This does not wo...
How to format date and time in Android?
...that both claim to give you a result that is set to the default Locale but one doesn't. So yes, don't forget to use the android.text.format version of DateFormat (that doesn't even derive the java.util one LOL).
– mxcl
Jul 20 '10 at 14:14
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INSERT IF NOT EXISTS ELSE UPDATE?
...ould be" solutions for the classic "How do I insert a new record or update one if it already exists" but I cannot get any of them to work in SQLite.
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Benchmarking small code samples in C#, can this implementation be improved?
...just updated to use Stopwatch.StartNew. Not a functional change, but saves one line of code.
– LukeH
Jun 26 '09 at 13:23
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How to get number of entries in a Lua table?
... 9 are valid results for #t. The only sane way to use it is with arrays of one contiguous part without nil values.
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Why does flowing off the end of a non-void function without returning a value not produce a compiler
...ur, and in practice it's calling convention and architecture dependent. On one particular system, with one particular compiler, the return value is the result of last expression evaluation, stored in the eax register of that system's processor.
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