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Rails - How to use a Helper Inside a Controller
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Note: This was written and accepted back in the Rails 2 days; nowadays grosser's answer is the way to go.
Option 1: Probably the simplest way is to include your helper module in your controller:
class MyController < ApplicationController
include MyHelper
def xxxx
@comments...
Get generic type of java.util.List
...ut if they're inside the same scope of the class/method where you need to know about them, then there's no point of knowing them, because you already have declared them yourself.
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Functions that return a function
... to the function, which can be assigned as you've done with var s = a(). s now contains a reference to the function b(), and calling s() is functionally equivalent to calling b().
// Return a reference to the function b().
// In your example, the reference is assigned to var s
return b;
Calling t...
How to merge specific files from Git branches
...sure in branch1 is checked out and active
$ git checkout branch2 file.py
Now file.py is now in branch1.
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How do I change my Ruby version using RVM?
...at's great, i just put this line in ~/.bashrc, it works. but i also don't know why.
– Jack Ma
Mar 21 '12 at 6:28
Yeah ...
Gradle finds wrong JAVA_HOME even though it's correctly set
...bove bin where javac lives as in
type javac
javac is /usr/bin/javac # now check if its just a symlink
ls -la /usr/bin/javac
/usr/bin/javac -> /etc/alternatives/javac # its a symlink so check again
ls -la /etc/alternatives/javac # now check if its just a symlink
/etc/alternatives/java...
How can I change my default database in SQL Server without using MS SQL Server Management Studio?
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Well this question is getting a bit old now. At the time I was using SQL 2005. Alter Login wasn't added until the 2008 version.
– Martin Brown
Nov 21 '17 at 15:19
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How can I disable a button in a jQuery dialog from a function?
...inueButton').attr("disabled", true);
Update: Ahha, I see the complexity now. The jQuery Dialog had a single line that will be of use (under the "buttons" section.
var buttons = $('.selector').dialog('option', 'buttons');
You'll need to get the buttons collection from the dialog, loop through...
LINQ: Not Any vs All Don't
...c<TSource, bool> predicate)
{
return !source.Any(predicate);
}
Now instead of your original
if (!acceptedValues.Any(v => v == someValue))
{
// exception logic
}
you could say
if (acceptedValues.None(v => v == someValue))
{
// exception logic
}
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Best JavaScript compressor [closed]
...tter than YUI on all scripts I tested it on, and it's safer than Closure (knows to deal with "eval" or "with").
Other than whitespace removal, UglifyJS also does the following:
changes local variable names (usually to single characters)
joins consecutive var declarations
avoids inserting any unne...