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JavaScript: Upload file
Let's say I have this element on the page:
2 Answers
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I need to generate uuid for my rails application. What are the options(gems) I have? [duplicate]
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There are plenty of options, I recommend not to add additional dependencies and use SecureRandom which is builtin:
SecureRandom.uuid #=> "1ca71cd6-08c4-4855-9381-2f41aeffe59c"
See other possible formats here.
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ALTER TABLE to add a composite primary key
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thanks for posting -- really got me out of battling with the ui
– plditallo
Aug 31 '13 at 3:41
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Difference between margin and padding?
...ding in CSS? It really doesn't seem to serve much purpose. Could you give me an example of where the differences lie (and why it is important to know the difference)?
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How can I convert my device token (NSData) into an NSString?
I am implementing push notifications. I'd like to save my APNS Token as a String.
29 Answers
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In php, is 0 treated as empty?
...ared, but without a value in a class)
Note that this is exactly the same list as for a coercion to Boolean false. empty is simply !isset($var) || !$var. Try isset instead.
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When to use self over $this?
... Use self to refer to the
current class. In other words, use
$this->member for non-static members,
use self::$member for static members.
Full Answer
Here is an example of correct usage of $this and self for non-static and static member variables:
<?php
class X {
private $non_stat...
Is there a better way to iterate over two lists, getting one element from each list for each iterati
... In Python 2.x you might consider itertools.izip instead (zip does the same thing in Python 3.x).
– Nicholas Riley
Dec 17 '09 at 2:08
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Call int() function on every list element?
I have a list with numeric strings, like so:
7 Answers
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Pass Multiple Parameters to jQuery ajax call
I have the following jquery code to call a webmethod in an aspx page
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