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Argparse: Required arguments listed under “optional arguments”?
...them is required. Unfortunately, when the user runs the script without providing the argument, the displayed usage/help text does not indicate that there is a non-optional argument, which I find very confusing. How can I get python to indicate that an argument is not optional?
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Change old commit message on Git
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I did that, and then commits from other branches show up in my branch
– Reza
Jul 20 at 19:18
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When do I need to use AtomicBoolean in Java?
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@axtavt: I think it's a perfectly valid real-world example if initialized is simply being used to ensure that one and only one thread will invoke the initialize() method. Obviously initialized being true doesn't mean that initialization has definitely completed ...
Git: Set up a fetch-only remote?
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I don't think you can remove the push URL, you can only override it to be something other than the pull URL. So I think the closest you'll get is something like this:
$ git remote set-url --push origin no-pushing
$ git push
fatal: 'no-pushing' does not appear to be a git repository
fa...
Is there a way to word-wrap long words in a div?
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Most of the previous answer didn't work for me in Firefox 38.0.5. This did...
<div style='padding: 3px; width: 130px; word-break: break-all; word-wrap: break-word;'>
// Content goes here
</div>
Documentation:
word-break
word-wrap
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Set Colorbar Range in matplotlib
..., 1024)
x = np.arange(0, 10, .1)
y = np.arange(0, 10, .1)
X, Y = np.meshgrid(x,y)
data = 2*( np.sin(X) + np.sin(3*Y) )
def do_plot(n, f, title):
#plt.clf()
plt.subplot(1, 3, n)
plt.pcolor(X, Y, f(data), cmap=cm, vmin=-4, vmax=4)
plt.title(title)
plt.colorbar()
plt.figure()
do...
Sort Go map values by keys
...This is because it used to be predictable, and the Go language developers didn't want people relying on unspecified behavior, so they intentionally randomized it so that relying on this behavior was impossible.
What you'll have to do, then, is pull the keys into a slice, sort them, and then range o...
Why use HttpClient for Synchronous Connection
... use HttpClient over WebRequest is concerned, well, HttpClient is the new kid on the block and could contain improvements over the old client.
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super() fails with error: TypeError “argument 1 must be type, not classobj” when parent does not inh
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
Add a new element to an array without specifying the index in Bash
...is syntax first appeared in version 3.1-alpha1.
– David Yaw
Jan 3 '14 at 21:17
41
@Jas: To access...