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new keyword in method signature
...wo(); // Calls implementation in B
Override can only be used in very specific cases. From MSDN:
You cannot override a non-virtual or
static method. The overridden base
method must be virtual, abstract, or
override.
So the 'new' keyword is needed to allow you to 'override' non-virtual ...
How to get active user's UserDetails
...User) ((Authentication) principal).getPrincipal();
...
}
That is ok if you need it once. But if you need it several times its ugly because it pollutes your controller with infrastructure details, that normally should be hidden by the framework.
So what you may really want is to have a contro...
How to call methods dynamically based on their name? [duplicate]
...just use public_send:
method_name = 'foobar'
obj.public_send(method_name) if obj.respond_to? method_name
If the method is private/protected, use send instead, but prefer public_send.
This is a potential security risk if the value of method_name comes from the user. To prevent vulnerabilities, yo...
How to use the pass statement?
..._a(self):
pass
def meth_b(self):
print "I'm meth_b"
If you were to leave out the pass, the code wouldn't run.
You would then get an:
IndentationError: expected an indented block
To summarize, the pass statement does nothing particular, but it can act as a placeholder, as d...
Compare two objects in Java with possible null values
...ts - making it more generic? And then it is the same as what you will get if you move to Java 7.
– Tom
Nov 7 '13 at 18:31
3
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Laravel Eloquent ORM Transactions
The Eloquent ORM is quite nice, though I'm wondering if there is an easy way to setup MySQL transactions using innoDB in the same fashion as PDO, or if I would have to extend the ORM to make this possible?
...
Remove substring from the string
I am just wondering if there is any method to remove string from another string?
Something like this:
10 Answers
...
targetContentOffsetForProposedContentOffset:withScrollingVelocity without subclassing UICollectionVi
...d my flow layout subclass.
Because you're doing it this way you can't specify items sizes, etc... in IB so in MyCollectionViewFlowLayout.m I have this...
- (void)awakeFromNib
{
self.itemSize = CGSizeMake(75.0, 75.0);
self.minimumInteritemSpacing = 10.0;
self.minimumLineSpacing = 10.0;
...
How to get a table cell value using jQuery?
...
If you can, it might be worth using a class attribute on the TD containing the customer ID so you can write:
$('#mytable tr').each(function() {
var customerId = $(this).find(".customerIDCell").html();
});
Essentia...
Change the selected value of a drop-down list with jQuery
...
Does this work if the select is hidden (display: none;)? I can't get it to work right...
– Padel
Jul 13 '10 at 15:10
11
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