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PHP code to remove everything but numbers
I'm trying to remove everything from a string but just numbers (0-9).
4 Answers
4
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Selectors in Objective-C?
...l about the method names. In this case, the method name is just "lowercaseString", not "lowercaseString:" (note the absence of the colon). That's why you're getting NO returned, because NSString objects respond to the lowercaseString message but not the lowercaseString: message.
How do you know wh...
Why can't yield return appear inside a try block with a catch?
...ting scopes with things like using and foreach. For example: try{foreach (string s in c){yield return s;}}catch(Exception){}
– Brian
Oct 26 '10 at 20:28
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What is the difference between parseInt(string) and Number(string) in JavaScript? [duplicate]
What is the difference between parseInt(string) and Number(string) in JavaScript?
6 Answers
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Rails: how do I validate that something is a boolean?
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This does not work, as any string eg, "foo" will be converted into true.
– Ka Mok
Jun 4 '18 at 22:55
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Prevent “overscrolling” of web page
...oll its content within. This works in Safari and in Chrome.
Edit
Why the extra <div>-element as a wrapper could be useful: Florian Feldhaus' solution uses slightly less code and works fine too. However, it can have a little quirk, when it comes to content that exceeds the viewport width. In ...
PHP Function Comments
... * Potential values are 'good', 'fair', 'poor' and 'unknown'.
* @var string $foo
*/
public $foo = 'unknown';
/**
* The status of life
* Note that names of private properties or methods must be
* preceeded by an underscore.
* @var bool $_good
*/
privat...
What does .SD stand for in data.table in R
...mples below, this is particularly helpful for chaining together "queries" (extractions/subsets/etc using [). In particular, this also means that .SD is itself a data.table (with the caveat that it does not allow assignment with :=).
The simpler usage of .SD is for column subsetting (i.e., when .SDc...
'AND' vs '&&' as operator
...r. For instance,
$predA && $predB ? "foo" : "bar"
will return a string whereas
$predA and $predB ? "foo" : "bar"
will return a boolean.
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Clicking the back button twice to exit an activity
... }
this.doubleBackToExitPressedOnce = true;
Toast.makeText(this, R.string.exit_press_back_twice_message, Toast.LENGTH_SHORT).show();
}
And it just works exactly as I want. Including the reset of the state whenever the activity is resumed.
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