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Why are regular expressions so controversial? [closed]
...ions. And not just slow, but the performance of the regex engine can be totally unpredictable when faced with arbitrary (user-supplied) inputs.
– Pacerier
Dec 1 '15 at 21:53
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iOS - Dismiss keyboard when touching outside of UITextField
...TapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard (_:)))
self.view.addGestureRecognizer(tapGesture)
For dismissKeyboard
@objc func dismissKeyboard (_ sender: UITapGestureRecognizer) {
aTextField.resignFirstResponder()
}
...
How can I auto-elevate my batch file, so that it requests from UAC administrator rights if required?
...
You can have the script call itself with psexec's -h option to run elevated.
I'm not sure how you would detect if it's already running as elevated or not... maybe re-try with elevated perms only if there's an Access Denied error?
Or, you could simp...
How do I declare a 2d array in C++ using new?
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A dynamic 2D array is basically an array of pointers to arrays. You can initialize it using a loop, like this:
int** a = new int*[rowCount];
for(int i = 0; i < rowCount; ++i)
a[i] = new int[colCount];
The above, for colCount= 5 and rowCount =...
How do PHP sessions work? (not “how are they used?”)
...on files are usually stored in, say, /tmp/ on the server, and named sess_{session_id} . I have been looking at the contents and cannot figure out how they really work.
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Ruby: Easiest Way to Filter Hash Keys?
...with just the choices in it.
choices = params.select { |key, value| key.to_s.match(/^choice\d+/) }
or you can use delete_if and modify the existing Hash e.g.
params.delete_if { |key, value| !key.to_s.match(/choice\d+/) }
or if it is just the keys and not the values you want then you can do:
p...
How to call Android contacts list?
I'm making an Android app, and need to call the phone's contact list. I need to call the contacts list function, pick a contact, then return to my app with the contact's name. Here's the code I got on the internet, but it doesnt work.
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Node.js: printing to console without a trailing newline?
...ered May 27 '11 at 20:51
onteria_onteria_
57.1k66 gold badges6363 silver badges6060 bronze badges
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AngularJS - How can I do a redirect with a full page load?
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For <a> tags:
You need to stick target="_self" on your <a> tag
There are three cases where AngularJS will perform a full page reload:
Links that contain target element
Example: <a href="/ext/link?a=b" target="_self">link</a>
Absolute links that...
How do I get the entity that represents the current user in Symfony2?
...*
* @var Security
*/
private $security;
public function __construct(Security $security)
{
$this->security = $security;
}
public function privatePage() : Response
{
$user = $this->security->getUser(); // null or UserInterface, if logged in
...