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How to get the first item from an associative PHP array?
...ll had better check that the array is not empty though, or you will get an error:
$firstKey = array_key_first($array);
if (null === $firstKey) {
$value = "Array is empty"; // An error should be handled here
} else {
$value = $array[$firstKey];
}
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Get Substring - everything before certain char
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Please do them a favor and add error checking as well assuming he plans to make a function out of this :)
– Josh
Dec 7 '09 at 2:51
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Regex using javascript to return just numbers
...m=item.replace('^.*\D(\d*)$', '$1');
if (!/^\d+$/.test(item)) throw 'parse error: number not found';
item=Number(item);
If you're dealing with numeric item ids on a web page, your code could also usefully accept an Element, extracting the number from its id (or its first parent with an id); if you...
How to change letter spacing in a Textview?
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This doesnt actually work when set in the XML. I get an error like this: "1.2dp" in attribute "letterSpacing" cannot be converted to float."
– dopatraman
Jan 16 '16 at 20:19
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How do I revert my changes to a git submodule?
...odified local files in a git submodule), the "update --init" command spews error: Your local changes to the following files would be overwritten by checkout
– rogerdpack
Sep 21 '16 at 20:27
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How to compare versions in Ruby?
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Note: This gives an error about undefined variable 'Gem' for me on Ruby 1.x, but works as expected on Ruby 2.x. In my case I was checking RUBY_VERSION against being Ruby 1.x (not 2.x), so I just did RUBY_VERSION.split('.')[0] == "1" like John Hy...
Laravel Controller Subfolder routing
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This did not work for me, error message now says App\Http\Controllers\Auth\Controller not found, why is it append the word Controller on there, and losing the actual name of the controller? I think its the slash thats doing that. -o didnt help.
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NPM clean modules
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return version[1];
}
var callback = function(error, stdout, stderr) {
var dependency = stdout.trim();
var version = getVersion(stderr);
var sourceDir = util.format(sourceDirMask, cacheDirectory, dependency, version);
var t...
Callback functions in Java
...hat simple
public interface myCallback {
void onSuccess();
void onError(String err);
}
now to make this callback run when ever you wish to do to handle the results - more likely after async call and you wanna run some stuff which depends on these reuslts
// import the Interface class her...
Max length UITextField
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count(textField.text!) gives an error. You must use textField.text!.characters.count
– Regis St-Gelais
Jul 8 '16 at 13:02
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