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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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Opposite of %in%: exclude rows with values specified in a vector
A categorical variable V1 in a data frame D1 can have values represented by the letters from A to Z. I want to create a subset D2, which excludes some values, say, B, N and T. Basically, I want a command which is the opposite of %in%
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How do DATETIME values work in SQLite?
...lass. A storage class is still a step weaker than a type and can be backed by multiple types. So yes, you can use DATETIME. No, it does not actually support it as a type or storage class. Yes, the documentation actually contains the word "DATETIME".
– Jasper
Oc...
Dynamic SELECT TOP @var In SQL Server
... Who else is here to realize the silly mistake in their query by not adding the parentheses?
– Raghav
Sep 6 '19 at 7:52
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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...
Having Django serve downloadable files
...h to the file (or the file itself), but the actual file serving is handled by Apache/Lighttpd. Once you've set up mod_xsendfile, integrating with your view takes a few lines of code:
from django.utils.encoding import smart_str
response = HttpResponse(mimetype='application/force-download') # mimety...
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
14
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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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