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count the frequency that a value occurs in a dataframe column
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13 Answers
13
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HSL to RGB color conversion
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308
Garry Tan posted a Javascript solution on his blog (which he attributes to a now defunct mjija...
Delete specific line number(s) from a text file using sed?
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384
If you want to delete lines 5 through 10 and 12:
sed -e '5,10d;12d' file
This will print th...
How to write loop in a Makefile?
...by your use of ./a.out, you're on a UNIX-type platform.
for number in 1 2 3 4 ; do \
./a.out $$number ; \
done
Test as follows:
target:
for number in 1 2 3 4 ; do \
echo $$number ; \
done
produces:
1
2
3
4
For bigger ranges, use:
target:
number=1 ; while [[ $$number...
How to start two threads at “exactly” the same time
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135
To start the threads at exactly the same time (at least as good as possible), you can use a Cyc...
Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
...e cited from §15.26.2
[...] the following code is correct:
short x = 3;
x += 4.6;
and results in x having the value 7 because it is equivalent to:
short x = 3;
x = (short)(x + 4.6);
In other words, your assumption is correct.
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How to remove element from an array in JavaScript?
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355
For a more flexible solution, use the splice() function. It allows you to remove any item in ...
What's the difference between “Layers” and “Tiers”?
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13 Answers
13
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Empty set literal?
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edited May 13 at 17:55
phoenix
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answ...
Python __str__ versus __unicode__
... method:
def __str__(self):
return unicode(self).encode('utf-8')
In 3.0, str contains characters, so the same methods are named __bytes__() and __str__(). These behave as expected.
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im...