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Check if a table exists in Rails
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304
In Rails 5 the API became explicit regarding tables/views, collectively data sources.
# Table...
How to add a delay for a 2 or 3 seconds [closed]
...AlldigEmAll
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13
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.NET HttpClient. How to POST string value?
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437
using System;
using System.Collections.Generic;
using System.Net.Http;
class Program
{
sta...
Build.scala, % and %% symbols meaning
...:
val appDependencies = Seq(
"org.scala-tools" % "scala-stm_2.9.1" % "0.3"
)
Assuming the scalaVersion for your build is 2.9.1, the following is identical:
val appDependencies = Seq(
"org.scala-tools" %% "scala-stm" % "0.3"
)
As you can see above, if you use %%, you don't have to spec...
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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break out of if and foreach
...how many loop structures it should break. Example:
foreach (array('1','2','3') as $a) {
echo "$a ";
foreach (array('3','2','1') as $b) {
echo "$b ";
if ($a == $b) {
break 2; // this will break both foreach loops
}
}
echo ". "; // never reached!
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Can't pickle when using multiprocessing Pool.map()
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edited Feb 28 '17 at 14:31
Jean-François Fabre♦
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How to make EditText not editable through XML in Android?
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ELITE
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answered May 30 '11 at 9:23
Kristiono SetyadiKr...
How to get the root dir of the Symfony2 application?
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answered Feb 9 '12 at 17:34
Jovan PerovicJovan Perovic
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...
VS2013 permanent CPU usage even though in idle mode
I've recently updated VS2013 to Update 1 and since then VS takes CPU usage to 25% (on a 4 cores intel i5 cpu) permanently even though it's supposed to be idle. I thought it has some unfinished background processes so I left it running for a while but it keeps using the cpu when it's supposed to be i...