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Performance surprise with “as” and nullable types
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10 Answers
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In PHP, what is a closure and why does it use the “use” identifier?
I'm checking out some PHP 5.3.0 features and ran across some code on the site that looks quite funny:
6 Answers
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Check if PHP session has already started
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Recommended way for versions of PHP >= 5.4.0 , PHP 7
if (session_status() == PHP_SESSION_NONE) {
session_start();
}
Reference: http://www.php.net/manual/en/function.session-status.php
For versions of PHP < 5.4.0
if(session_id() == '') {
session_start()...
Generate GUID in MySQL for existing Data?
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Calling a method every x minutes
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answered Oct 22 '12 at 20:39
asawyerasawyer
16.3k77 gold badges5050 silver badges8080 bronze badges
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How to read from standard input in the console?
... " \n") }
– Nam G VU
Sep 27 '17 at 10:20
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Why should eval be avoided in Bash, and what should I use instead?
...ap &3 (or anything higher than &2) to your target:
exec 3<&0 # Redirect from stdin
exec 3>&1 # Redirect to stdout
exec 3>&2 # Redirect to stderr
exec 3> /dev/null # Don't save output anywhere
exec 3> file.txt # Redirect to file
exec 3> ...
How can I handle R CMD check “no visible binding for global variable” notes when my ggplot2 syntax i
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answered Feb 24 '12 at 23:10
HarlanHarlan
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How to get the selected radio button’s value?
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402
You can do something like this:
var radios = document.getElementsByName('genderS');
for...
Nested fragments disappear during transition animation
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+100
In order to avoid the user seeing the nested fragments disappearing when the parent fragment is removed/replaced in a transaction you...