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Guards vs. if-then-else vs. cases in Haskell
...condition, or one single decision you need to make. Nested if..then..else-em>x m>pressions are very uncommon in Haskell, and guards should almost always be used instead.
let absOfN =
if n < 0 -- Single binary em>x m>pression
then -n
else n
Every if..then..else em>x m>pression can be replaced by a guar...
Overloading member access operators ->, .*
I understand most operator overloading, with the em>x m>ception of the member access operators -> , .* , ->* etc.
5 An...
Get ffmpeg information in friendly way
... about my video files with ffmpeg, it pukes a lot of useless information mim>x m>ed with good things.
4 Answers
...
Pandas aggregate count distinct
...>>> df.groupby("date").agg({"duration": np.sum, "user_id": lambda m>x m>: m>x m>.nunique()})
duration user_id
date
2013-04-01 65 2
2013-04-02 45 1
share
...
Get element at specified position - JavaScript
...cally I'm looking to write a function that takes two input parameters (the m>x m> and y coordinates) and returns the html element at the position on the screen represented by the parameters.
...
How to remove specific element from an array using python
...
You don't need to iterate the array. Just:
>>> m>x m> = ['ala@ala.com', 'bala@bala.com']
>>> m>x m>
['ala@ala.com', 'bala@bala.com']
>>> m>x m>.remove('ala@ala.com')
>>> m>x m>
['bala@bala.com']
This will remove the first occurence that matches the string.
EDIT:...
check if variable is dataframe
...
Use isinstance, nothing else:
if isinstance(m>x m>, pd.DataFrame):
... # do something
PEP8 says em>x m>plicitly that isinstance is the preferred way to check types
No: type(m>x m>) is pd.DataFrame
No: type(m>x m>) == pd.DataFrame
Yes: isinstance(m>x m>, pd.DataFrame)
And don't eve...
What does the tilde (~) mean in my composer.json file?
...
Tilde means nem>x m>t significant release. In your case, it is equivalent to >= 2.0, < 3.0.
The full em>x m>planation is at Tilde Version Range docs page:
The ~ operator is best em>x m>plained by em>x m>ample: ~1.2 is equivalent to >=1.2 <2.0...
How to change the font size on a matplotlib plot
...
nice, em>x m>cept it override any fontsize property found on it's way è_é
– yota
Sep 25 '14 at 11:56
2
...
Illegal string offset Warning PHP
...1" ["port"]=> string(5) "11211" } string(5) "m_prefim>x m>" PHP 5.4 now $m>x m>m>x m>['host'] threw the warning correctly.
– thesonim>x m>
Mar 26 '12 at 9:17
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