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Android: How to enable/disable option menu item on button click?
... // You can also use something like:
// menu.findItem(R.id.example_foobar).setEnabled(false);
}
return true;
}
On Android 3.0 and higher, the options menu is considered to always be open when menu items are presented in the action bar. When an event occurs and you want to perform a...
Triggering HTML5 Form Validation
...whatever. The following code works for me:
<form>
<input name="foo" required>
<button id="submit">Submit</button>
</form>
<script>
$('#submit').click( function(e){
var isValid = true;
$('form input').map(function() {
isValid &= this.validity['...
What does (x ^ 0x1) != 0 mean?
...4 ^ 0x1 is true, but 4==0 is obviously false.
– Fred Foo
Dec 19 '13 at 10:54
4
"condition seems t...
How to create a zip file in Java
... a way to make this work if the extension is not .zip? I need to write a .foo file, which is formatted exactly like a zip file, but with a different extension. I know I could make a .zip file and rename it, but just creating it with the right name would be simpler.
– Troy Dan...
How to check if element is visible after scrolling?
...n element scrolls into view or otherwise becomes visible to the user.
$('#foo').appear(function() {
$(this).text('Hello world');
});
This plugin can be used to prevent unnecessary requests for content that's hidden or outside the viewable area.
...
Java 8 Lambda function that throws exception?
...on<T, R> {
R apply(T t) throws IOException;
}
and use it:
void foo (CheckedFunction f) { ... }
Otherwise, wrap Integer myMethod(String s) in a method that doesn't declare a checked exception:
public Integer myWrappedMethod(String s) {
try {
return myMethod(s);
}
cat...
How to elegantly check if a number is within a range?
...maximum;
}
Which would let you do something like...
int val = 15;
bool foo = val.IsWithin(5,20);
That being said, this seems like a silly thing to do when the check itself is only one line.
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What's the deal with a leading underscore in PHP class methods?
...ivate with an underscore. In some older classes you'll see /**private*/ __foo() { to give it some extra weight.
I've never heard of developers prefacing all their methods with underscores, so I can't begin to explain what causes that.
...
How to find where a method is defined at runtime?
...is gem:
ruby18_source_location
So you can request for the method:
m = Foo::Bar.method(:create)
And then ask for the source_location of that method:
m.source_location
This will return an array with filename and line number.
E.g for ActiveRecord::Base#validates this returns:
ActiveRecord::B...
Simulate delayed and dropped packets on Linux
...pply only to the port(s), which you want tested: iptables -A INPUT --dport FOO -m statistics .... This way, your ssh and other connections will remain unmolested and you can bump the drop-rate for the service of interest to be able to reproduce any problems with it faster.
– Mi...