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Convert XLS to CSV on command line
How could I convert an XLS file to a CSV file on the windows command line.
15 Answers
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In Python how should I test if a variable is None, True or False
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Don't fear the Exception! Having your program just log and continue is as easy as:
try:
result = simulate(open("myfile"))
except SimulationException as sim_exc:
print "error parsing stream", sim_exc
else:
if res...
Still Reachable Leak detected by Valgrind
...rightly) argue that certain types of memory leaks that fit this definition don't actually pose any sort of problem, and therefore should not be considered true "memory leaks".
An arguably stricter (and more useful) definition of "memory leak" is, "Memory was allocated and cannot be subsequently fre...
Converting Stream to String and back…what are we missing?
...ary string to formatted bytes
formatted bytes to the original string
You do not have "formatted bytes". You have arbitrary bytes. You need to use something like a base-n (commonly: base-64) encode. This transfers
arbitrary bytes to a formatted string
a formatted string to the original bytes
lo...
How to fix “Referenced assembly does not have a strong name” error?
...strong naming is in regards of the Global Assembly Cache (GAC). Despite, I don't want to make my assemblies part of the GAC and neither are they COM-visible. I remember partially remember of something we may do that will allow the use of this assembly without signing it. It is somewhere in the optio...
How do I center floated elements?
...ayed as block, so they need to be floated. But then, text-align: center; doesn't work on them. I could achieve it by giving the wrapper div padding of left, but every page will have a different number of pages, so that wouldn't work. Here's my code:
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Rails hidden field undefined method 'merge' error
I wanna do something like this in rails
6 Answers
6
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pandas GroupBy columns with NaN (missing) values
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This is mentioned in the Missing Data section of the docs:
NA groups in GroupBy are automatically excluded. This behavior is consistent with R, for example.
One workaround is to use a placeholder before doing the groupby (e.g. -1):
In [11]: df.fillna(-1)
Out[11]:
a b
0 ...
What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
...ngth - 1 (where Length is total number of items in the array) so this code doesn't work:
array[array.Length] = 0;
Moreover please note that if you have a multidimensional array then you can't use Array.Length for both dimension, you have to use Array.GetLength():
int[,] data = new int[10, 5];
fo...
How can I develop for iPhone using a Windows development machine?
Is there any way to tinker with the iPhone SDK on a Windows machine? Are there plans for an iPhone SDK version for Windows?
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