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Negation in Python
...il said in the comments), you don't have to use the subprocess module, you can simply use os.mkdir() to get the result you need, with added exception handling goodness.
Example:
blues_sounds_path = "/usr/share/sounds/blues"
if not os.path.exists(blues_sounds_path):
try:
os.mkdir(blues_...
How to override the [] operator in Python?
...erwise this will happen:
>>> myobj[5] = 1
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: MyClass instance has no attribute '__setitem__'
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Undoing a git bisect mistake
...scover that you made a mistake in specifying the status of a revision, you can save the output of this command to a file, edit it to remove the incorrect entries, and then issue the following commands to return to a corrected state:
$ git bisect reset
$ git bisect replay that-file
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How do you do natural logs (e.g. “ln()”) with numpy in Python?
Using numpy, how can I do the following:
4 Answers
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Why does “while(true)” without “Thread.sleep” cause 100% CPU usage on Linux but not on Windows?
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By default, top on Linux runs in so-called IRIX mode, while the Windows Task Manager does not. Let's say you have 4 cores:
With IRIX mode on, 1 fully utilized core is 100% and 4 cores are 400%.
With IRIX mode off, 1 fully utilized core is 25% and 4 cores are...
How to display a content in two-column layout in LaTeX?
...ulticols}
If you omit the \columnbreak, the columns will balance automatically.
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How to use split?
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Documentation can be found e.g. at MDN. Note that .split() is not a jQuery method, but a native string method.
If you use .split() on a string, then you get an array back with the substrings:
var str = 'something -- something_else';
var...
Show current key setting?
...tunately, map expands <key_name> values in both the LHS and RHS. You can exploit this to see the value of <Leader> even if it is the default value.
:nmap temp :echo('your leader is "<Leader>"')<Esc>| execute 'normal temp'| nunmap temp
Note that if you put this in your .vim/v...
Netbeans: how to change @author
...osing your e-mail address. The javadoc processor will think it's HTML, and call it an error.
– Stevens Miller
Sep 14 '16 at 19:01
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GridView VS GridLayout in Android Apps
...associated with this view.
This is what you'd want to use (keep using). Because a GridView gets its data from a ListAdapter, the only data loaded in memory will be the one displayed on screen.
GridViews, much like ListViews reuse and recycle their views for better performance.
Whereas a GridLayou...