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Checking if form has been submitted - PHP
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That's true; it can also check any variable posted by AJAX.
– Tzshand
Jun 7 '17 at 22:00
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How do I auto-reload a Chrome extension I'm developing?
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Reloads all unpacked extensions using the extension's toolbar button or by browsing to "http://reload.extensions"
If you've ever developed a Chrome extension, you might have wanted to
automate the process of reloading your unpacked extension without the
need of going through the extensio...
Is there a bash command which counts files?
... I would not use ls, since it creates a child process. log* is expanded by the shell, not ls, so a simple echo would do.
– cdarke
Jul 3 '12 at 9:24
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MySQL - length() vs char_length()
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LENGTH() returns the length of the string measured in bytes.
CHAR_LENGTH() returns the length of the string measured in characters.
This is especially relevant for Unicode, in which most characters are encoded in two bytes. Or UTF-8, where the number of bytes varies. For ex...
Changing the “tick frequency” on x or y axis in matplotlib?
...al one-liner, simply get the current ticks and use it to set the new ticks by sampling every other tick.
ax.set_xticks(ax.get_xticks()[::2])
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“std::endl” vs “\n”
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The difference can be illustrated by the following:
std::cout << std::endl;
is equivalent to
std::cout << '\n' << std::flush;
So,
Use std::endl If you want to force an immediate flush to the output.
Use \n if you are worried about pe...
html - table row like a link
... That's pretty elegant actually. I wonder if it's considered invalid html by w3c standards.
– Mahn
Oct 6 '12 at 3:00
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Fix a Git detached head?
...lying a plane but you're really crossing the street. You're gonna get hit by cars.
– iconoclast
Nov 12 '18 at 17:26
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Extract first item of each sublist
..., 100000 loops each)
Fully native using list comprehension (as explained by @alecxe):
%timeit [item[0] for item in lst]
379 ns ± 23.1 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)
Another native way using zip (as explained by @dawg):
%timeit list(zip(*lst))[0]
585 ns ± 7.26 n...
How to get year, month, day, hours, minutes, seconds and milliseconds of the current moment in Java?
...g migration to the java.time classes. Both Joda-Time and java.time are led by the same man, Stephen Colebourne.
– Basil Bourque
May 22 '17 at 15:27
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