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How to extract extension from filename string in Javascript? [duplicate]
...n-capturing group, make it optional
$ # anchor to the end of the string
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What is the string length of a GUID?
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It depends on how you format the Guid:
Guid.NewGuid().ToString() => 36 characters (Hyphenated)
outputs: 12345678-1234-1234-1234-123456789abc
Guid.NewGuid().ToString("D") => 36 characters (Hyphenated, same as ToString())
outputs: 12345678-1234-1234-1234-123456789abc
Guid.New...
Cleaner way to update nested structures
...nt = 3, superMode: Boolean = false)
scala> @zip case class Game(state: String = "pause", pacman: Pacman = Pacman())
scala> val g = Game()
g: Game = Game("pause",Pacman(3,false))
// Changing the game state to "run" is simple using the copy method:
scala> val g1 = g.copy(state = "run")
g...
Calculate a percent with SCSS/SASS
.... $foo + $bar * 1px), concatenating the unit on like that only gives you a string.
– cimmanon
Mar 10 '15 at 1:16
@cimm...
Difference between `set`, `setq`, and `setf` in Common Lisp?
...undefined behaviour, because the value of ls is constant (like modifying a string literal in C). After (setq ls (list (list (list 1)))), (setf (car (car (car ls))) 5) works just like ls->val->val->val = 5 in C.
– kyle
Jun 13 '17 at 1:41
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Conditionally start at different places in storyboard from AppDelegate
...troller, and send the performSegueWithIdentifier:sender: message to it:
NSString *segueId = success ? @"pushMain" : @"pushLogin";
[self.window.rootViewController performSegueWithIdentifier:segueId sender:self];
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Manipulate a url string by adding GET parameters
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Basic method
$query = parse_url($url, PHP_URL_QUERY);
// Returns a string if the URL has parameters or NULL if not
if ($query) {
$url .= '&category=1';
} else {
$url .= '?category=1';
}
More advanced
$url = 'http://example.com/search?keyword=test&category=1&tags[]=fun&...
How do I check that a number is float or integer?
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Careful, this will also return true for an empty string, a string representing an integral number, true, false, null, an empty array, an array containing a single integral number, an array containing a string representing an integral number, and maybe more.
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How do you know a variable type in java?
...now whether it's an instance of a certain class:
boolean b = a instanceof String
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How do you usually Tag log entries? (android)
...sume most of you are aware of android.util.Log
All logging methods accept 'String tag' as a first argument.
13 Answers
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