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How to properly check if std::function is empty in C++11?
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You're not checking for an empty lambda, but whether the std::function has a callable target stored in it. The check is well-defined and works because of std::function::operator bool which allows for implicit conversion to bool in contexts where...
When correctly use Task.Run and when just async-await
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Note the guidelines for performing work on a UI thread, collected on my blog:
Don't block the UI thread for more than 50ms at a time.
You can schedule ~100 continuations on the UI thread per second; 1000 is too much.
There are two techniques...
How to remove gaps between subplots in matplotlib?
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You can use gridspec to control the spacing between axes. There's more information here.
import matplotlib.pyplot as plt
import matplotlib.gridspec as gridspec
plt.figure(figsize = (4,4))
gs1 = gridspec.GridSpec(4, 4)
gs1.update(wspace=0.025, hspace=0.05) # set the spacing between axes.
for i...
Shell script to delete directories older than n days
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This will do it recursively for you:
find /path/to/base/dir/* -type d -ctime +10 -exec rm -rf {} \;
Explanation:
find: the unix command for finding files / directories / links etc.
/path/to/base/dir: the directory to start your search in.
-type d: ...
git-svn: how do I create a new svn branch via git?
...ike kch answered, use git svn branch. Here is a full example, (note the -n for dry-run to test):
git svn branch -n -m "Branch for authentication bug" auth_bug
If this goes well, server replies with answer like this:
Copying https://scm-server.com/svn/portal/trunk at r8914 to https://scm-serv...
how does array[100] = {0} set the entire array to 0?
...ribed in section 6.7.8.21 of the C specification (online draft of C spec): for the elements that don't have a specified value, the compiler initializes pointers to NULL and arithmetic types to zero (and recursively applies this to aggregates).
The behavior of this code in C++ is described in secti...
Why return NotImplemented instead of raising NotImplementedError
...untime will fall back to the built-in behavior (which is based on identity for == and !=)."
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How can I prevent the “You have mixed tabs and spaces. Fix this?” message?
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LOL... For what it's worth, I just enabled the setting, put a bunch of tabs into my file using Notepad, and then got the prompt. Clicking untabify turned all the tabs into spaces, and I don't get the message again for that file.
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What is the difference between a regular string and a verbatim string?
... I believe it is a kind of coding convention (I have never seen or heard before). For strings ReSharper suggest either to move it into a resource file for localization or to make it verbatim - for verbatim strings ReSharper then no longer offers the option to localize the string. So it seems like a ...
In Java, how do I parse XML as a String instead of a file?
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I have this function in my code base, this should work for you.
public static Document loadXMLFromString(String xml) throws Exception
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Inpu...