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Email address validation using ASP.NET MVC data type attributes

...Expression Attribute, something like this: [RegularExpression("^[a-zA-Z0-9_\\.-]+@([a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,6}$", ErrorMessage = "E-mail is not valid")] And don't delete [Required] because [RegularExpression] doesn't affect empty fields. ...
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ASP.NET MVC Razor pass model to layout

...odel : ViewModelBase { } public abstract class ViewModelBase { } in the _Layout.cshtml: @model Models.ViewModelBase <!DOCTYPE html> <html> and so on... in the the Index (for example) method in the home controller: public ActionResult Index() { var model = new S...
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How do I write data into CSV format as string (not file)?

... You could use StringIO instead of your own Dummy_Writer: This module implements a file-like class, StringIO, that reads and writes a string buffer (also known as memory files). There is also cStringIO, which is a faster version of the StringIO class. ...
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“Variable” variables in Javascript?

...you can either try using eval(): var data = "testVariable"; eval("var temp_" + data + "=123;"); alert(temp_testVariable); Or using the window object: var data = "testVariable"; window["temp_" + data] = 123; alert(window["temp_" + data]); http://www.hiteshagrawal.com/javascript/dynamic-variable...
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Concurrent.futures vs Multiprocessing in Python 3

...o make it work: from concurrent.futures import ProcessPoolExecutor def pool_factorizer_map(nums, nprocs): # Let the executor divide the work among processes by using 'map'. with ProcessPoolExecutor(max_workers=nprocs) as executor: return {num:factors for num, factors in ...
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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 ...
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Make a UIButton programmatically in Swift

..., 500) myFirstButton.addTarget(self, action: #selector(myClass.pressed(_:)), forControlEvents: .TouchUpInside) self.view.addSubview(myFirstLabel) self.view.addSubview(myFirstButton) } @objc func pressed(sender: UIButton!) { var alertView = UIAlertView() alertView.addButtonWithTi...
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How do you remove duplicates from a list whilst preserving order?

.../uniqifiers-benchmark Fastest one: def f7(seq): seen = set() seen_add = seen.add return [x for x in seq if not (x in seen or seen_add(x))] Why assign seen.add to seen_add instead of just calling seen.add? Python is a dynamic language, and resolving seen.add each iteration is more cos...
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How do I add a path to PYTHONPATH in virtualenv

...ing virtualenvwrapper, $ cd to the parent folder $ add2virtualenv folder_to_add console will display Warning: Converting "folder_to_add" to "/absoutle/path/to/folder_to_add" That's it, and you should be good to go s...
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Convert Elixir string to integer or float

...er directly. If you want to do that, see @Szymon Jeż answer with String.to_integer/1 – user4275029 Sep 26 '16 at 12:27 6 ...