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How to validate an email address using a regular expression?

...may not be exactly what you want to achieve. For example, it accepts these strings as valid e-mail addresses: "user1@hotmail.com; user2@gmail.com" "user1@hotmail.com; user2@gmail.com; user3@company.com" "User Display Name user3@company.com" "user4 @company.com" In some of these cases, only the l...
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Difference between case object and object

...lt implementations of serialization a prettier default implementation of toString, and the small amount of functionality that they get from automatically inheriting from scala.Product. Pattern matching, equals and hashCode don't matter much for singletons (unless you do something really degener...
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Android getting value from selected radiobutton

... android:layout_height="wrap_content" android:text="@string/radio_male" android:checked="true" /> <RadioButton android:id="@+id/radioFemale" android:layout_width="wrap_content" android:layout_height="wrap_content" ...
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Which is better: … or …

...PT - - %Script; -- script statements --> <!ATTLIST SCRIPT charset %Charset; #IMPLIED -- char encoding of linked resource -- type %ContentType; #REQUIRED -- content type of script language -- src %URI; #IMPLIED -- URI for an external script -- ...
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How to dismiss keyboard for UITextView with return key?

...tView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text { if([text isEqualToString:@"\n"]) { [textView resignFirstResponder]; return NO; } return YES; } Swift 4.0 update: func textView(_ textView: UITextView, shouldChangeTextIn range:...
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Is there any way to post events to Google Analytics via server-side API? [closed]

...ublic class GoogleAnalyticsApi { public static void TrackEvent(string type, string category, string action, string label, string value) { ASCIIEncoding encoding = new ASCIIEncoding(); string postData = "v=1&tid=UX-XXXXX...
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What are 'closures' in .NET?

...ple, take this C# code: delegate int testDel(); static void Main(string[] args) { int foo = 4; testDel myClosure = delegate() { return foo; }; int bar = myClosure(); } At the end of it, bar will be set to 4, and the myClosure d...
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Simple Log to File example for django 1.3+

...read-1 ] [INFO ] [djangoproject.logger] This is a manually logged INFO string. 2016-04-05 22:12:32,984 [Thread-1 ] [DEBUG] [djangoproject.logger] This is a manually logged DEBUG string. 2016-04-05 22:12:32,984 [Thread-1 ] [ERROR] [django.request ] Internal Server Error: / Traceback ...
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Get class name of django model

... If you want something more implicit than a call to string, then you can get the same (tried on Django 1.11) with: Book._meta.object_name or Book._meta.model_name. Then if you want the app name as well, that's accessible via Book._meta.app_label – Geekfis...
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How do I intercept a method call in C#?

...I understand it, this is what you want to do: [Log()] public void Method1(String name, Int32 value); and in order to do that you have two main options Inherit your class from MarshalByRefObject or ContextBoundObject and define an attribute which inherits from IMessageSink. This article has a go...