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How do the likely/unlikely macros in the Linux kernel work and what is their benefit?
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They are hint to the compiler to emit instructions that will cause branch prediction to favour the "likely" side of a jump instruction. This can be a big win, if the prediction is correct it means that the jump instruction is basically free and will take zero ...
Sort a single String in Java
Is there a native way to sort a String by its contents in java? E.g.
10 Answers
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Git push results in “Authentication Failed”
I have been using Github for a little while and I have been fine with git add , git commit , and git push so far with no problems. Suddenly I am having an error that says:
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Using Build Flavors - Structuring source folders and build.gradle correctly
Please note: Answer edited after Xavier's Answer
6 Answers
6
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How to download source in ZIP format from GitHub?
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To clone that repository via a URL like that: yes, you do need a client, and that client is Git. That will let you make changes, your own branches, merge back in sync with other developers, maintain your own source that you can easily keep up t...
How to calculate the CPU usage of a process by PID in Linux from C?
...ning, S is sleeping, D is sleeping in an
uninterruptible wait, Z is zombie, T is traced or stopped)
ppid process id of the parent process
pgrp pgrp of the process
sid session id
tty_nr tty the process uses
tty_pgrp pgrp of the tty
f...
How do I define global variables in CoffeeScript?
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Since coffee script has no var statement it automatically inserts it for all variables in the coffee-script, that way it prevents the compiled JavaScript version from leaking everything into the global namespace.
So since there's no way to make something "leak" i...
How do you round a floating point number in Perl?
...t int() merely truncates toward 0. For rounding to a certain number of digits, sprintf() or printf() is usually the easiest
route.
printf("%.3f", 3.1415926535); # prints 3.142
The POSIX module (part of the standard Perl distribution) implements
ceil(), floor(), and a number of other ma...
SSH library for Java [closed]
... Channel (JSCH) is a very popular library, used by maven, ant and eclipse. It is open source with a BSD style license.
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What exactly are late static bindings in PHP?
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You definitely need to read Late Static Bindings in the PHP manual. However, I'll try to give you a quick summary.
Basically, it boils down to the fact that the self keyword does not follow the same rules of inheritance. self alway...