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MySQL: @variable vs. variable. What's the difference?
...are loosely typed variables that may be initialized somewhere in a session and keep their value until the session ends.
They are prepended with an @ sign, like this: @var
You can initialize this variable with a SET statement or inside a query:
SET @var = 1
SELECT @var2 := 2
When you develop a stor...
Unit Test? Integration Test? Regression Test? Acceptance Test?
...er has not introduced any errors.
Regression testing - after integrating (and maybe fixing) you should run your unit tests again. This is regression testing to ensure that further changes have not broken any units that were already tested. The unit testing you already did has produced the unit te...
android:drawableLeft margin and/or padding
...ssible to set the margin or padding for the image which we added with the android:drawableLeft ?
18 Answers
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Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...msize of the process that failed to fork, at the time of the fork attempt, and then compare to the amount of free memory (physical and swap) as it relates to the overcommit policy (plug the numbers in.)
In your particular case, note that Virtuozzo has additional checks in overcommit enforcement. M...
How to make good reproducible pandas examples
Having spent a decent amount of time watching both the r and pandas tags on SO, the impression that I get is that pandas questions are less likely to contain reproducible data. This is something that the R community has been pretty good about encouraging, and thanks to guides like this , newc...
How do I check that a number is float or integer?
...0;
}
Update 2019
5 years after this answer was written, a solution was standardized in ECMA Script 2015. That solution is covered in this answer.
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Why should text files end with a newline?
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Because that’s how the POSIX standard defines a line:
3.206 Line
A sequence of zero or more non- <newline> characters plus a terminating <newline> character.
Therefore, lines not ending in a newline character aren't considered act...
How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
...s of dependencies, not using a package manager (like yum, rpm, apt, dpkg), and not using shared libraries?
6 Answers
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File name? Path name? Base name? Naming standard for pieces of a path
I keep getting myself in knots when I am manipulating paths and file names, because I don't have a common naming system that I use.
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Choosing a stand-alone full-text search server: Sphinx or SOLR? [closed]
I'm looking for a stand-alone full-text search server with the following properties:
5 Answers
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