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How to check if a file exists in a folder?
I need to check if an xml file exists in the folder.
9 Answers
9
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How to check if variable's type matches Type stored in a variable
How do I test if some variable is of some type in this way?
4 Answers
4
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Javascript: How to detect if browser window is scrolled to bottom?
I need to detect if a user is scrolled to the bottom of a page. If they are at the bottom of the page, when I add new content to the bottom, I will automatically scroll them to the new bottom. If they are not at the bottom, they are reading previous content higher on the page, so I don't want to aut...
How can I tell when HttpClient has timed out?
As far as I can tell, there's no way to know that it's specifically a timeout that has occurred. Am I not looking in the right place, or am I missing something bigger?
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How do you check if a JavaScript Object is a DOM Object?
...t. This code is tested in FF3, IE7, Chrome 1 and Opera 9).
//Returns true if it is a DOM node
function isNode(o){
return (
typeof Node === "object" ? o instanceof Node :
o && typeof o === "object" && typeof o.nodeType === "number" && typeof o.nodeName==="string"
...
Getting a better understanding of callback functions in JavaScript
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You can just say
callback();
Alternately you can use the call method if you want to adjust the value of this within the callback.
callback.call( newValueForThis);
Inside the function this would be whatever newValueForThis is.
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How to test if one java class extends another at runtime?
How to I test if a is a subclass of b ?
3 Answers
3
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Java: Check if enum contains a given string?
Here's my problem - I'm looking for (if it even exists) the enum equivalent of ArrayList.contains(); .
29 Answers
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How to enable/disable bluetooth programmatically in android
...toothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter.isEnabled()) {
mBluetoothAdapter.disable();
}
For this to work, you must have the following permissions:
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission ...
How to convert date to timestamp in PHP?
...h Windows and Unix and is time-zone aware, which is probably what you want if you work with dates.
If you don't care about timezone, or want to use the time zone your server uses:
$d = DateTime::createFromFormat('d-m-Y H:i:s', '22-09-2008 00:00:00');
if ($d === false) {
die("Incorrect date str...