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jQuery disable/enable submit button
...oved away from the input (e.g. someone clicks off the input or tabs out of it). Try using keyup instead:
$(document).ready(function() {
$(':input[type="submit"]').prop('disabled', true);
$('input[type="text"]').keyup(function() {
if($(this).val() != '') {
$(':input[typ...
Placeholder in UITextView
My application uses an UITextView . Now I want the UITextView to have a placeholder similar to the one you can set for an UITextField .
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Use of alloc init instead of new
...a bunch of reasons here: http://macresearch.org/difference-between-alloc-init-and-new
Some selected ones are:
new doesn't support custom initializers (like initWithString)
alloc-init is more explicit than new
General opinion seems to be that you should use whatever you're comfortable with.
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Populating a database in a Laravel migration file
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edited Oct 4 '12 at 21:31
answered Oct 4 '12 at 21:25
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Copy a variable's value into another
I have a variable which has a JSON object as its value. I directly assign this variable to some other variable so that they share the same value. This is how it works:
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Overriding superclass property with different type in Swift
...n Swift, can someone explain how to override a property on a superclass's with another object subclassed from the original property?
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How to deal with page breaks when printing a large HTML table
I have a project which requires printing an HTML table with many rows.
12 Answers
12
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Signed to unsigned conversion in C - is it always safe?
...ll be converted to an unsigned integer by adding UINT_MAX + 1, then the addition will be carried out with the unsigned values, resulting in a large result (depending on the values of u and i).
Long Answer
According to the C99 Standard:
6.3.1.8 Usual arithmetic conversions
If both opera...
Get the (last part of) current directory name in C#
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edited May 16 '11 at 13:47
answered May 16 '11 at 13:42
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UIRefreshControl on UICollectionView only works if the collection fills the height of the container
... control does not appear unless the collection view fills up the height of its parent container. In other words, unless the collection view is long enough to require scrolling, it cannot be pulled down to reveal the refresh control view. As soon as the collection exceeds the height of its parent con...