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How should I validate an e-mail address?
... ")+"
);
You can use function
private boolean checkEmail(String email) {
return EMAIL_ADDRESS_PATTERN.matcher(email).matches();
}
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How to play a local video with Swift?
...e provided solution did not work for me.
private func playVideo(from file:String) {
let file = file.components(separatedBy: ".")
guard let path = Bundle.main.path(forResource: file[0], ofType:file[1]) else {
debugPrint( "\(file.joined(separator: ".")) not found")
return
...
How do I use Django templates without the rest of Django?
...from django.conf import settings
settings.configure(DEBUG=False)
template_string = "Hello {{ name }}"
template = Template(template_string, engine=Engine())
context = Context({"name": "world"})
output = template.render(context) #"hello world"
...
Why does !{}[true] evaluate to true in JavaScript?
..., because it's parsed as a statement block containing a label (key:) and a string literal ("value"), followed by an array. The parser still does not see an object literal.
– Frédéric Hamidi
Oct 31 '13 at 9:54
...
Is null reference possible?
...red_ptr<Error>> _instances;
static Error& NewInstance(const string& name, bool isNull = false);
private:
bool _isNull;
Error(const string& name, bool isNull = false) : _name(name), _isNull(isNull) {};
Error() {};
Error(const Error& src) {};
Error& operator=(...
JavaScript for detecting browser language preference [duplicate]
...tecting that nav.languages is an array, you should use: Object.prototype.toString.call(nav.languages) === '[object Array]'
– Jaume Mussons Abad
Nov 17 '17 at 7:31
...
Overriding !important style
...
What extra information or improvement does this answer provide ?
– Pogrindis
Dec 21 '16 at 14:31
...
Access POST values in Symfony2 request object
... $deep parameter to true and access the required deep nested value without extra variable:
$request->request->get('form[some][deep][data]', null, true);
Also you have possibility to set a default value (2nd parameter of get() method), it can avoid redundant isset($form['some']['deep']['data...
Most efficient method to groupby on an array of objects
...ypeScript signature: var groupBy = function<TItem>(xs: TItem[], key: string) : {[key: string]: TItem[]} { ...
– Michael Sandino
Dec 7 '17 at 9:47
...
Check whether an array is empty [duplicate]
...ro value.
The following things are considered to be empty:
"" (an empty string)
0 (0 as an integer)
0.0 (0 as a float)
"0" (0 as a string)
NULL
FALSE
array() (an empty array)
var $var; (a variable declared, but without a value in a class)
...