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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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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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“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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Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=

... The default collation for stored procedure parameters is utf8_general_ci and you can't mix collations, so you have four options: Option 1: add COLLATE to your input variable: SET @rUsername = ‘aname’ COLLATE utf8_unicode_ci; -- COLLATE added CALL updateProductUsers(@rUsername, @r...
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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 I find where JDK is installed on my windows machine?

...hich java Should output the exact location. After that, you can set JAVA_HOME environment variable yourself. In my computer (Mac OS X - Snow Leopard): $ which java /usr/bin/java $ ls -l /usr/bin/java lrwxr-xr-x 1 root wheel 74 Nov 7 07:59 /usr/bin/java -> /System/Library/Frameworks/JavaV...
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Best way to show a loading/progress indicator?

... From the Android Developer website: STYLE_SPINNER Creates a ProgressDialog with a circular, spinning progress bar. – Tequilaman Dec 26 '14 at 1:15 ...
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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 ...
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How do I “source” something in my .vimrc file?

...t;C-]> :set yy bbbb4dw The only file sourced by default is the .vimrc(_vimrc on windows) so that's a place you can keep all the commands you use to set up Vim every time. Where it gets interesting is the fact that since a sourced file is just a series of commands, and sourcing is a command, yo...
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How to bind an enum to a combobox control in WPF?

... an optional blank value for default/no selection [Description("")] NOT_SET = 0, [Description("Sunday")] SUNDAY, [Description("Monday")] MONDAY, ... } First I created helper class with a couple methods to deal with enums. One method gets a description for a specific value, the other ...