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When and why to 'return false' in JavaScript?
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This is particularly good if you want an AJAX form that submits without reloading the page - but also works by submitting and reloading the page when javascript is not available.
– Dean Rather
May 13 '09 at 1:50
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Why is Java Vector (and Stack) class considered obsolete or deprecated?
...ence of operations. Synchronizing individual operations is both less safe (if you iterate over a Vector, for instance, you still need to take out a lock to avoid anyone else changing the collection at the same time, which would cause a ConcurrentModificationException in the iterating thread) but als...
CSS: Change image src on img:hover
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With only html and css, its not posible to change the src of image. If you do replace the img tag with div tag, then you might be able to change the image that is set as the background as like
div {
background: url('http://dummyimage.com/100x100/000/fff');
}
div:hover {
background: ...
Get list of a class' instance methods
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This is great way to test if a class has polymorphed methods from a pseudo-Interface/Abstract base class without having to try and call the methods directly.
– Daniel Doezema
Apr 19 '13 at 13:03
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Can an interface extend multiple interfaces in Java?
...// methods
}
A single class can also implement multiple interfaces. What if two interfaces have a method defining the same name and signature?
There is a tricky point:
interface A {
void test();
}
interface B {
void test();
}
class C implements A, B {
@Override
public void tes...
How to display loading message when an iFrame is loading?
I have an iframe that loads a third party website which is extremely slow to load.
9 Answers
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Check if a value is an object in JavaScript
How do you check if a value is an object in JavaScript?
46 Answers
46
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Which is the correct C# infinite loop, for (;;) or while (true)? [closed]
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If you want to go old school, goto is still supported in C#:
STARTOVER:
//Do something
goto STARTOVER;
For a truly infinite loop, this is the go-to command. =)
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Crash logs generated by iPhone Simulator?
...h
Something I haven't yet figured out is how to get them to generate even if the debugger grabs the EXC_BAD_ACCESS signal.
Update
Currently, (OSX 10.11.6), the .crash logs in ~/Library/Logs/DiagnosticReports, are when the emulator itself crashes. Logs for an app crashing (but the emulator devi...
How to programmatically set style attribute in a view
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There is also such a thing as a StateListDrawable which lets you define different drawables for each state the your Button can be in, whether focused, selected, pressed, disabled and so on.
For example, to get your button to change colour when it's pressed, you could define an XML file called res...