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find: missing argument to -exec
...ated with a ; (so you usually need to type \; or ';' to avoid interpretion by the shell) or a +. The difference is that with ;, the command is called once per file, with +, it is called just as few times as possible (usually once, but there is a maximum length for a command line, so it might be spli...
Git Bash is extremely slow on Windows 7 x64
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You can significantly speed up Git on Windows by running three commands to set some config options:
git config --global core.preloadindex true
git config --global core.fscache true
git config --global gc.auto 256
Notes:
core.preloadindex does filesystem operations i...
How do I list all cron jobs for all users?
...s in /etc/cron.d . It would also be nice to see the specific commands run by run-parts in /etc/crontab .
23 Answers
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Covariance, Invariance and Contravariance explained in plain English?
...bove.
At heart, these terms describe how the subtype relation is affected by type transformations. That is, if A and B are types, f is a type transformation, and ≤ the subtype relation (i.e. A ≤ B means that A is a subtype of B), we have
f is covariant if A ≤ B implies that f(A) ≤ f(B)
f ...
Android REST client, Sample?
...es. The following is a list of some of the libraries I've evaluated. It is by no means intended to be an exhaustive list.
Volley (this is from Google)
RESTDroid
RoboSpice
Retrofit
Original Answer:
Presenting my approach to having REST clients on Android. I do not claim it is the best though :) Al...
How do you change the document font in LaTeX?
...odern Sans, most definitely not Helvetica (which is not available for free by the way). The source you cite is wrong.
– Midgard
May 25 '16 at 12:28
5
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shell init issue when click tab, what's wrong with getcwd?
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@kevinarpe, yes, $PWD is guaranteed by POSIX to be defined. See pubs.opengroup.org/onlinepubs/9699919799/utilities/…
– Charles Duffy
Sep 3 '15 at 16:38
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How to use the toString method in Java?
...e toString function doesn't mean you should too.
– Toby Caulk
Jul 12 '17 at 18:42
2
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Python argparse command line flags without arguments
...lue after -w on the command line. If you are just looking to flip a switch by setting a variable True or False, have a look at http://docs.python.org/dev/library/argparse.html#action (specifically store_true and store_false)
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-...
Why do stacks typically grow downwards?
...ary location, depending on what was supplied at that address (usually, but by no means limited to, ROM).
One of the first things some historical systems would do would be to scan memory from the top until it found a location that would read back the same value written, so that it would know the ac...