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How to check if a particular service is running on Ubuntu
...':
sudo service --status-all | grep postgres
Or you may use another way if you know correct name of service:
sudo service postgresql status
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Adjust width of input field to its input
...mically to the width of the textbox based on the contents of the textbox. If so you will need some js to run on textbox contents changing, something like this:
<input id="txt" type="text" onkeypress="this.style.width = ((this.value.length + 1) * 8) + 'px';">
Note: this solution only works ...
JavaScript displaying a float to 2 decimal places
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float_num.toFixed(2);
Note:toFixed() will round or pad with zeros if necessary to meet the specified length.
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Change templates in Xcode
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You wouldn't change the existing templates. In other words, don't modify anything under the /Developer hierarchy (or wherever you installed your developer tools).
Instead, clone the templates you want to have customized variants of. Then change their names and the information in them. Final...
How can I determine if a date is between two dates in Java? [duplicate]
How can I check if a date is between two other dates, in the case where all three dates are represented by instances of java.util.Date ?
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How do I temporarily disable triggers in PostgreSQL?
I'm bulk loading data and can re-calculate all trigger modifications much more cheaply after the fact than on a row-by-row basis.
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Regular Expression to reformat a US phone number in Javascript
...eplace(/\D/g, '')
var match = cleaned.match(/^(\d{3})(\d{3})(\d{4})$/)
if (match) {
return '(' + match[1] + ') ' + match[2] + '-' + match[3]
}
return null
}
Here's a version that allows the optional +1 international code:
function formatPhoneNumber(phoneNumberString) {
var cleaned =...
Is there a practical use for weak references? [duplicate]
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If you want to keep a reference to something as long as it is used elsewhere e.g. a Listener, you can use a weak reference.
WeakHashMap can be used as a short lived cache of keys to derived data. It can also be used to keep...
How do I call one constructor from another in Java?
...l a constructor from another (within the same class, not from a subclass)? If yes how? And what could be the best way to call another constructor (if there are several ways to do it)?
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How to get JSON from URL in JavaScript?
...mp;callback', function(data) {
// JSON result in `data` variable
});
If you don't want to use jQuery you should look at this answer for pure JS solution: https://stackoverflow.com/a/2499647/1361042
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