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Delete column from pandas DataFrame
...1', 'Col2', ...]
df.drop(columns, inplace=True, axis=1)
This will delete one or more columns in-place. Note that inplace=True was added in pandas v0.13 and won't work on older versions. You'd have to assign the result back in that case:
df = df.drop(columns, axis=1)
...
When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
...to void*), and it can also call explicit conversion functions (or implicit ones). In many cases, explicitly stating static_cast isn't necessary, but it's important to note that the T(something) syntax is equivalent to (T)something and should be avoided (more on that later). A T(something, something_...
Getting a map() to return a list in Python 3.x
...eneralizations
UPDATE
Always seeking for shorter ways, I discovered this one also works:
*map(chr, [66, 53, 0, 94]),
Unpacking works in tuples too. Note the comma at the end. This makes it a tuple of 1 element. That is, it's equivalent to (*map(chr, [66, 53, 0, 94]),)
It's shorter by only one ...
Favorite Visual Studio keyboard shortcuts [closed]
...son - it doesn't just cycle like most apps.
– Lucas Jones
Jul 1 '09 at 21:28
6
@Lucas Jones, It s...
Auto expand a textarea using jQuery
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I have tried lots and
this one is great. Link is dead. Newer version is available here. See below for old version. You can try by pressing and hold enter key in textarea. Compare the effect with the other auto expanding textarea plugin....
edit based ...
jQuery set checkbox checked
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Why not just on one single line? $( "#even_allday_yn").prop('checked', allDay);
– Xavier Hayoz
Oct 23 '14 at 14:43
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Why is my git repository so big?
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I recently pulled the wrong remote repository into the local one (git remote add ... and git remote update). After deleting the unwanted remote ref, branches and tags I still had 1.4GB (!) of wasted space in my repository. I was only able to get rid of this by cloning it with git clo...
Logging best practices [closed]
...etc) and Verbose logging simply becomes too much.
Rather than having only one switch that turns it all either on or off, it is useful to be able to turn on this information for one section of your system at a time.
This way, you can locate significant problems from the usually logging (all warning...
Ignore python multiple return value
...
One common convention is to use a "_" as a variable name for the elements of the tuple you wish to ignore. For instance:
def f():
return 1, 2, 3
_, _, x = f()
...
How do I find the most recent git commit that modified a file?
...all it like this:
git log my/file.c
If you really only want to list the one most recent commit, for example to use it in a script, use the -n 1 option:
git log -n 1 --pretty=format:%H -- my/file.c
--pretty=format:%h tells git log to show only the commit hash. The -- separater stops the file na...