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Which characters make a URL invalid?
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Here's a regex that will determine if the entire string contains only the characters above: /^[!#$&-;=?-[]_a-z~]+$/
– Leif Wickland
Oct 7 '11 at 17:01
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Select unique or distinct values from a list in UNIX shell script
...only lines with no embedded spaces are handled correctly; to fix this, use IFS=$'\n' read -d '' -r -A u <file; print -l ${(u)u} instead.
– mklement0
Jan 18 '14 at 8:18
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jquery disable form submit on enter
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The problem is if I have in the same form a textbox, now I can't add an enter(to make a new line) in textbox.
– Tikky
Mar 2 '17 at 12:44
3
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Is < faster than
...- B < 0
A = B --> A - B = 0
A > B --> A - B > 0
Now, when A < B the subtraction has to borrow a high-bit for the subtraction to be correct, just like you carry and borrow when adding and subtracting by hand. This "borrowed" bit was usually referred to as the carry bit a...
JavaScript naming conventions [closed]
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I think he is doing fine with the link. If you are so concerned you should edit the post.
– nckbrz
Dec 12 '14 at 13:21
4
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64-bit version of Boost for 64-bit windows
...aries on my site:
http://boost.teeks99.com
Edit 2013-05-13: My builds are now available (starting from 1.53) directly from the sourceforge page.
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How to get the current time in milliseconds from C in Linux?
...ed obsolete. This means it may be removed from a future version of the specification. Application writers are encouraged to use the clock_gettime function instead of gettimeofday.
Here is an example of how to use clock_gettime:
#define _POSIX_C_SOURCE 200809L
#include <inttypes.h>
#include ...
What exactly does an #if 0 … #endif block do?
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Not only does it not get executed, it doesn't even get compiled.
#if is a preprocessor command, which gets evaluated before the actual compilation step. The code inside that block doesn't appear in the compiled binary.
It's often used for temporarily removing segments of code with the inte...
How do I print the full value of a long string in gdb?
...of-elements
Set a limit on how many elements of an array GDB will print. If GDB is printing a large array, it stops printing after it has printed the number of elements set by the set print elements command. This limit also applies to the display of strings. When GDB starts, this limit is set to 2...
How do I find out my python path using python?
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sys.path might include items that aren't specifically in your PYTHONPATH environment variable. To query the variable directly, use:
import os
try:
user_paths = os.environ['PYTHONPATH'].split(os.pathsep)
except KeyError:
user_paths = []
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