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What is the difference between an interface and abstract class?

...'t do anything. It's just a pattern. For example (pseudo code): // I say all motor vehicles should look like this: interface MotorVehicle { void run(); int getFuel(); } // My team mate complies and writes vehicle looking that way class Car implements MotorVehicle { int fuel; vo...
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Linq Syntax - Selecting multiple columns

...method chaining. The method chaining equivalent would be:- var employee = _db.EMPLOYEEs .Where(x => x.EMAIL == givenInfo || x.USER_NAME == givenInfo) .Select(x => new { x.EMAIL, x.ID }); AFAIK, the declarative LINQ syntax is converted to a method call chain similar to this when it i...
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Determine if Android app is being used for the first time

... Beware for Android 6.0 (API 23 - Marshmallow) or above auto backup (developer.android.com/guide/topics/data/autobackup.html)is enabled by default. If the users uninstalls and then reinstalls the app the shared preferences will be recovered. So on reinstalls you ca...
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How do I remove code duplication between similar const and non-const member functions?

... C &>(*this).get()); } char c; }; The two casts and function call may be ugly but it's correct. Meyers has a thorough explanation why. share | improve this answer | ...
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How to use a class from one C# project with another C# project

...that you wish to access directly must have a sufficient access level: typically this means they must be made public. share | improve this answer | follow | ...
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Is it possible in SASS to inherit from a class in another file?

The question pretty much says it all. 4 Answers 4 ...
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Python Create unix timestamp five minutes in the future

... Now in Python >= 3.3 you can just call the timestamp() method to get the timestamp as a float. import datetime current_time = datetime.datetime.now(datetime.timezone.utc) unix_timestamp = current_time.timestamp() # works if Python >= 3.3 unix_timestamp_pl...
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Swift - Convert to absolute value

...alue.magnitude) // prints: 5 #2. Get absolute value of an Int from abs(_:) method Swift has a global numeric function called abs(_:) method. abs(_:) has the following declaration: func abs<T>(_ x: T) -> T where T : Comparable, T : SignedNumeric Returns the absolute value of the g...
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Merge a Branch into Trunk

... Really? Without risking remerging the same changesets? Can you provide a link to corroborating evidence of this please. – Neutrino Apr 3 '12 at 16:56 ...
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Creating anonymous objects in php

... This is interesting but it doesn't really address the question, as the OP was asking about a convenient way to initialise an object with various members without creating a class. I am not sure whether anonymous classes in php can be used to do that, and if it ca...