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Instance variable: self vs @
...enerate an intializer (How to generate initializer in Ruby?)
class Node < Struct.new(:value)
def initialize(value)
@value = value
end
def show()
p @value
p self.value # or `p value`
end
end
n = Node.new(30)
n.show()
will return
30
nil
However, whe...
Flatten nested dictionaries, compressing keys
...st for collections.MutableMapping to make it more generic. But for Python < 2.6, try..except is probably the best option.
– Imran
May 17 '11 at 7:55
...
Using Mockito to test abstract classes
...thods that are invoked.
Example:
public abstract class My {
public Result methodUnderTest() { ... }
protected abstract void methodIDontCareAbout();
}
public class MyTest {
@Test
public void shouldFailOnNullIdentifiers() {
My my = Mockito.mock(My.class, Mockito.CALLS_REAL_METHO...
Structs in Javascript
...ar count = names.length;
function constructor() {
for (var i = 0; i < count; i++) {
this[names[i]] = arguments[i];
}
}
return constructor;
}
var Item = makeStruct("id speaker country");
var row = new Item(1, 'john', 'au');
alert(row.speaker); // displays: john
...
jquery, find next element by class
...
In this case you need to go up to the <tr> then use .next(), like this:
$(obj).closest('tr').next().find('.class');
Or if there may be rows in-between without the .class inside, you can use .nextAll(), like this:
$(obj).closest('tr').nextAll(':has(.class...
How do I avoid the specification of the username and password at every git push?
... git push https://github.com/repo.git
Username for 'https://github.com': <USERNAME>
Password for 'https://USERNAME@github.com': <PASSWORD>
Use should also specify caching expire,
git config --global credential.helper 'cache --timeout 7200'
After enabling credential caching, it will b...
Why does Oracle 9i treat an empty string as NULL?
...egious divergence from SQL92, you'd think he'd be less punchy about it... although he might be tired of answering.
– Chris R
Oct 15 '08 at 3:10
8
...
Find commit by hash SHA in Git
...he Pretty Formats section of the git show documentation contains
format:<string>
The format:<string> format allows you to specify which information you want to show. It works a little bit like printf format, with the notable exception that you get a newline with %n instead of \n …
T...
How do I get the entity that represents the current user in Symfony2?
...inject the Security service via auto-wiring in the controller like this:
<?php
use Symfony\Component\Security\Core\Security;
class SomeClass
{
/**
* @var Security
*/
private $security;
public function __construct(Security $security)
{
$this->security = $sec...
Modifying location.hash without page scrolling
...$( '#' + hash );
if ( node.length ) {
node.attr( 'id', '' );
fx = $( '<div></div>' )
.css({
position:'absolute',
visibility:'hidden',
top: $(document).scrollTop() + 'px'
})
.attr( 'id', hash )
.appendTo...