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Best way to add “current” class to nav in Rails 3
...m using quite the same way as you are. I've just defined helper methods to test for multiple controller or actions:
In application_helper.rb
def controller?(*controller)
controller.include?(params[:controller])
end
def action?(*action)
action.include?(params[:action])
end
Then y...
Dealing with commas in a CSV file
... including embedded quotes and carriage returns.
By the way, this is unit-tested code. I’m posting it now because this question seems to come up a lot and others may not want an entire library when simple CSV support will do.
You can use it as follows:
using System;
public class test
{
p...
How to assign the output of a Bash command to a variable? [duplicate]
...
In shell you assign to a variable without the dollar-sign:
TEST=`pwd`
echo $TEST
that's better (and can be nested) but is not as portable as the backtics:
TEST=$(pwd)
echo $TEST
Always remember: the dollar-sign is only used when reading a variable.
...
@selector() in Swift?
...y in Swift. (For example, use optional chaining on protocol types or is/as tests instead of respondsToSelector:, and use closures wherever you can instead of performSelector: for better type/memory safety.)
But there are still a number of important ObjC-based APIs that use selectors, including timer...
Remove Trailing Spaces and Update in Columns in SQL Server
...bleName
LTRIM - Removes spaces from the left
example: select LTRIM(' test ') as trim = 'test '
RTRIM - Removes spaces from the right
example: select RTRIM(' test ') as trim = ' test'
share
|
...
Conventions for exceptions or error codes
...on what you measure and how you measure. It's pretty easy to come up with tests that show exception-based APIs can be far faster.
– Mooing Duck
Jan 30 '14 at 0:04
1
...
jQuery hasAttr checking to see if there is an attribute on an element [duplicate]
...
This test actually fails in chrome (and likely all webkit) because a nonexistent attribute in those browsers returns 'false' instead of undefined. karim79 is soooo close, but this will work better: $.fn.hasAttr = function(attr) { ...
Spring Boot - inject map from application.yml
...ringApplication.run(MapBindingSample.class, args)
.getBean(Test.class).getInfo());
}
@Bean
@ConfigurationProperties
public Test test() {
return new Test();
}
public static class Test {
private Map<String, Object> info = new HashMap<...
Is there a C# type for representing an integer Range?
... the range.</summary>
/// <param name="value">The value to test</param>
/// <returns>True if the value is inside Range, else false</returns>
public bool ContainsValue(T value)
{
return (this.Minimum.CompareTo(value) <= 0) && (value.Com...
Can I use Objective-C blocks as properties?
...sure they are declared as @property(copy). For example:
typedef void(^TestBlock)(void);
@interface SecondViewController : UIViewController
@property (nonatomic, copy) TestBlock block;
@end
In MRC, blocks capturing context variables are allocated in stack; they will be released when the stack...