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How can I check if string contains characters & whitespace, not just whitespace?
... of non whitespace:
if (/\S/.test(myString)) {
// string is not empty and not just whitespace
}
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Laravel Schema onDelete set null
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You might want to roll back, write out the sql by hand and then execture and run tests on local. Everything I can find says that should work dev.mysql.com/doc/refman/5.6/en/…, could be an issue generating the sql
– Chris Barrett
Jan 1 ...
Signal handling with multiple threads in Linux
...ch version of the Linux kernel you are using.
Assuming 2.6 posix threads, and if you are talking about the OS sending SIGTERM or SIGHUP, the signal is sent to process, which is received by and handled by root thread. Using POSIX threads, you can also sent SIGTERM to individual threads as well, but ...
How do pointer to pointers work in C?
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Let's assume an 8 bit computer with 8 bit addresses (and thus only 256 bytes of memory). This is part of that memory (the numbers at the top are the addresses):
54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
+----+----+----+----+----+----+----+...
How do I filter ForeignKey choices in a Django ModelForm?
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Ok, thanks for expanding the example, but I seem to have to use form.fields["rate"].queryset to avoid "'ClientForm' object has no attribute 'rate'", am I missing something? (and your example should be form.rate.queryset to be consistent too.)
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Show space, tab, CRLF characters in editor of Visual Studio
...ed > View White Space. The keyboard shortcut is CTRL+R, CTRL+W. The command is called Edit.ViewWhiteSpace.
It works in all Visual Studio versions at least since Visual Studio 2010, the current one being Visual Studio 2019 (at time of writing). In Visual Studio 2013, you can also use CTRL+E, S or...
How to do a scatter plot with empty circles in Python?
... following:
import matplotlib.pyplot as plt
import numpy as np
x = np.random.randn(60)
y = np.random.randn(60)
plt.scatter(x, y, s=80, facecolors='none', edgecolors='r')
plt.show()
Note: For other types of plots see this post on the use of markeredgecolor and markerfacecolor.
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Setting up two different static directories in node.js Express framework
... set up two different directories to serve static files. Let's say /public and /mnt
4 Answers
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Maximum execution time in phpMyadmin
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You can use code formatting to make it clear what is code and what is not as well :)
– span
Dec 13 '12 at 11:07
26
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rails - Devise - Handling - devise_error_messages
...error_messsages! method is just a stub (though it contains implementation) and that we're supposed to override/replace it. It would have been nice if this was pointed out somewhere in the wiki, which is why i guess there are a few people like us that have been guessing.
So I'm going to try reopenin...