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How can a Java variable be different from itself?
...same with Double.NaN.
From JLS §15.21.1. Numerical Equality Operators == and !=:
Floating-point equality testing is performed in accordance with the rules of the IEEE 754 standard:
If either operand is NaN, then the result of == is false but the result of != is true.
Indeed, the test x!=x is tru...
How can I trigger an onchange event manually? [duplicate]
... the onchange listener is a function set via the element.onchange property and you're not bothered about the event object or bubbling/propagation, the easiest method is to just call that function:
element.onchange();
If you need it to simulate the real event in full, or if you set the event via t...
call a static method inside a class?
...@Ian Dunn Put simply, $this only exists if an object has been instantiated and you can only use $this->method from within an existing object. If you have no object but just call a static method and in that method you want to call another static method in the same class, you have to use self::. So...
Why does sudo change the PATH?
...ashrc
alias sudo='sudo env PATH=$PATH'
Note the above will work for commands that don't reset the $PATH themselves.
However `su' resets it's $PATH so you must use -p to tell it not to. I.E.:
sudo su -p
share
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Func with out parameter
...
ref and out are not part of the type parameter definition so you can't use the built-in Func delegate to pass ref and out arguments. Of course, you can declare your own delegate if you want:
delegate V MyDelegate<T,U,V>(T ...
Clear Application's Data Programmatically
...ationUserData().
I highly recommend using it in new applications:
import android.os.Build.*;
if (VERSION_CODES.KITKAT <= VERSION.SDK_INT) {
((ActivityManager)context.getSystemService(ACTIVITY_SERVICE))
.clearApplicationUserData(); // note: it has a return value!
} else {
// ...
Can you use hash navigation without affecting history?
...he hash value of a URL without leaving an entry in the browser's history and without reloading ? Or do the equivalent?
4...
HTML inside Twitter Bootstrap popover
...since it belongs to <a href="#" that's why it wasn't working, change it and it's all good.
Here is working JSFiddle which shows you how to create bootstrap popover.
Relevant parts of the code is below:
HTML:
<!--
Note: Popover content is read from "data-content" and "title" tags.
-->
<a...
Mercurial: Can I rename a branch?
...taging" seems to be a far better semantic fit. What's a good strategy for handling this?
5 Answers
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How do I revert master branch to a tag in git?
We have branches origin and develop.
The initial state of master was tagged at tag_ABC .
2 Answers
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