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Regex to check whether a string contains only numbers [duplicate]
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This one will allow also for signed and float numbers or empty string:
var reg = /^-?\d*\.?\d*$/
If you don't want allow to empty string use this one:
var reg = /^-?\d+\.?\d*$/
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How do I programmatically determine operating system in Java?
...e operating system of the host that my Java program is running programmatically (for example: I would like to be able to load different properties based on whether I am on a Windows or Unix platform). What is the safest way to do this with 100% reliability?
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Add vertical whitespace using Twitter Bootstrap?
...g the documentation for used notation:
Spacing utilities that apply to all breakpoints, from xs to xl,
have no breakpoint abbreviation in them. This is because those classes
are applied from min-width: 0 and up, and thus are not bound by a
media query. The remaining breakpoints, however, d...
Initialising mock objects - MockIto
...Runner :
JUnit 4.5 runner initializes mocks annotated with Mock, so that explicit usage of MockitoAnnotations.initMocks(Object) is not necessary. Mocks are initialized before each test method.
The first solution (with the MockitoAnnotations.initMocks) could be used when you have already configure...
How do I dump the data of some SQLite3 tables?
...d only the data, not the schema, of some SQLite3 tables of a database (not all the tables)?
The dump should be in SQL format, as it should be easily re-entered into the database later and should be done from the command line. Something like
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launch sms application with an intent
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To start launch the sms activity all you need is this:
Intent sendIntent = new Intent(Intent.ACTION_VIEW);
sendIntent.setData(Uri.parse("sms:"));
You can add extras to populate your own message and such like this
sendIntent.putExtra("sms_body", ...
Check if an image is loaded (no errors) with jQuery
...e you risk that the image might load (or encounter an error) before those callbacks are added, and they won't be called.
– callum
Feb 7 '12 at 11:32
19
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How do I add indices to MySQL tables?
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ALTER TABLE `table` ADD INDEX `product_id_index` (`product_id`)
Never compare integer to strings in MySQL. If id is int, remove the quotes.
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Check if event is triggered by a human
...way to do this would be to pass in an additional parameter on the trigger call as per the documentation.
$('.checkbox').change(function(e, isTriggered){
if (!isTriggered)
{
alert ('human');
}
});
$('.checkbox').trigger('change', [true]); //doesn't alert
Example: http://jsfiddle.net/wG2...
Synchronizing a local Git repository with a remote one
...-p does the same - 'git pull runs git fetch with the given parameters and calls git merge to merge the retrieved branch heads into the current branch' - git-scm.com/docs/git-pull
– jobwat
Oct 27 '14 at 21:37
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