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Which HTML elements can receive focus?
I'm looking for a definitive list of HTML elements which are allowed to take focus, i.e. which elements will be put into focus when focus() is called on them?
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How to automatically crop and center an image
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One solution is to use a background image centered within an element sized to the cropped dimensions.
Basic example
.center-cropped {
width: 100px;
height: 100px;
background-position: center center;
background-repeat: no-repeat;
}
<div class="center-cropped"
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How do I implement onchange of with jQuery?
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You can use .change()
$('input[name=myInput]').change(function() { ... });
However, this event will only fire when the selector has lost focus, so you will need to click somewhere else to have this work.
If that's not quite right for you, you could use so...
Do Java arrays have a maximum size?
Is there a limit to the number of elements a Java array can contain? If so, what is it?
9 Answers
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Error : BinderProxy@45d459c0 is not valid; is your activity running?
... being destroyed.
I was seeing this error reported once in a while from some of my apps when the activity calling the dialog was finishing for some reason or another when it tried to show a dialog. Here's what solved it for me:
if(!((Activity) context).isFinishing())
{
//show dialog
}
I've ...
In-memory size of a Python structure
Is there a reference for the memory size of Python data stucture on 32- and 64-bit platforms?
7 Answers
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Build fat static library (device + simulator) using Xcode and SDK 4+
...tup, but much nicer long-term solution (it converts your library into a Framework).
Use this, then tweak it to add support for Archive builds - c.f. @Frederik's comment below on the changes he's using to make this work nicely with Archive mode.
RECENT CHANGES:
1. Added support for iOS 10.x (whil...
How can I get the URL of the current tab from a Google Chrome extension?
I'm having fun with Google Chrome extension, and I just want to know how can I store the URL of the current tab in a variable?
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Best way to convert string to bytes in Python 3?
...ence of integers in the range 0 <= x < 256. It has most of the usual methods of mutable sequences, described in Mutable Sequence Types, as well as most methods that the bytes type has, see Bytes and Byte Array Methods.
The optional source parameter can be used to initialize the array in a few ...
Is Java “pass-by-reference” or “pass-by-value”?
...ble is still pointing to the "Max" dog when foo(...) returns
aDog.getName().equals("Max"); // true
aDog.getName().equals("Fifi"); // false
aDog == oldDog; // true
}
public static void foo(Dog d) {
d.getName().equals("Max"); // true
// change d inside of foo() to point to a new D...