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Defining a variable with or without export
...ary to export in bash when spawning subshells, while others said the exact opposite. It is important to note the difference between subshells (those that are created by (), ``, $() or loops) and subprocesses (processes that are invoked by name, for example a literal bash appearing in your script).
...
Global variables in Javascript across multiple files
...copy/pasted" into your HTML page before the page is rendered. Or into your PHP page if you will. Please correct me if I'm wrong here. Thanx.
My example files follow:
EXTERNAL JS:
var global = 0;
function f1()
{
alert('fired: f1');
global = 1;
alert('global changed to 1');
}
function...
Checking from shell script if a directory contains files
...
For Bash idiots like me, if you want to check the opposite - that the directory is empty - just use if [ -z ls /some/dir/* ]; then echo "huzzah"; fi
– Chris Moschini
Sep 24 '13 at 16:38
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Multiple “order by” in LINQ
... on CategoryID first or Name first, let alone if they were to be sorted in opposite orders.
– Triynko
Aug 31 '15 at 19:08
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show 6 more comm...
What is the best regular expression to check if a string is a valid URL?
...EFFFD}!\$&'\(\)\*\+,;=:@])|[\/\?])*)?)$/i
How they were compiled (in PHP):
<?php
/* Regex convenience functions (character class, non-capturing group) */
function cc($str, $suffix = '', $negate = false) {
return '[' . ($negate ? '^' : '') . $str . ']' . $suffix;
}
function ncg($str, $...
Child inside parent with min-height: 100% not inheriting height
... @styler adding height: 1px; will not override the min-height. Quite the opposite. This is the best solution here... demo: jsbin.com/mosaboyo/1/edit
– jjenzz
May 1 '14 at 9:52
...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
...will see something like this:
$ env -i perl -V
...
@INC:
/usr/lib/perl5/site_perl/5.18.0/x86_64-linux-thread-multi-ld
/usr/lib/perl5/site_perl/5.18.0
/usr/lib/perl5/5.18.0/x86_64-linux-thread-multi-ld
/usr/lib/perl5/5.18.0
.
Note . at the end; this is the current directory (which is not n...
pip broke. how to fix DistributionNotFound error?
... myself as an example.
I had virtualenv version 1.10 installed in my user site-packages (the fact it's in user site-packages not sytem site-packages is irrelevant here)
pdobrogost@host:~$ which virtualenv
/home/users/pdobrogost/.local/bin/virtualenv
pdobrogost@host:~$ virtualenv --version
1.10
A...
Is it safe to check floating point values for equality to 0?
...ad the same sign, and less than any number if one of the small numbers had opposite signs. IMHO, IEEE-754 would be better if it had an unsigned zero, but positive and negative infinitesimals.
– supercat
Aug 5 '16 at 16:21
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How do you skip a unit test in Django?
...
Is there an opposite to --exclude-tag, e.g. --include-tag but this command is non-existent.
– JohnnyQ
Oct 7 '19 at 6:27
...