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displayname attribute vs display attribute
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They both give you the same results but the key difference I see is that you cannot specify a Re...
XPath - Selecting elements that equal a value
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178
The XPath spec. defines the string value of an element as the concatenation (in document order...
Struggling with NSNumberFormatter in Swift for currency
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HttpServletRequest - how to obtain the referring URL?
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311
It's available in the HTTP referer header. You can get it in a servlet as follows:
String refe...
Symbol for any number of any characters in regex?
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241
.*
. is any char, * means repeated zero or more times.
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What is the ellipsis (…) for in this method signature?
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213
Those are Java varargs. They let you pass any number of objects of a specific type (in this cas...
?: operator (the 'Elvis operator') in PHP
...lse ?: 0); // 0
var_dump(null ?: 'foo'); // 'foo'
var_dump(true ?: 123); // true
var_dump('rock' ?: 'roll'); // 'rock'
?>
By the way, it's called the Elvis operator.
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How does Spring autowire by name when more than one matching bean is found?
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This is documented in section 3.9.3 of the Spring 3.0 manual:
For a fallback match, the be...
Use of ~ (tilde) in R programming Language
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The thing on the right of <- is a formula object. It is often used to denote a statistical ...
How to get the date from jQuery UI datepicker
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131
Use
var jsDate = $('#your_datepicker_id').datepicker('getDate');
if (jsDate !== null) { // if...