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What does principal end of an association means in 1:1 relationship in Entity framework

... Note you may need to add using System.ComponentModel.DataAnnotations.Schema; to get ForeignKey in VS2012 – stuartdotnet Jun 28 '13 at 23:37 2 ...
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Which access modifiers are implied when not specified?

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Possible to access the index in a Hash each loop?

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NSUserDefaults removeObjectForKey vs. setObject:nil

...g stored. Possibly an NSNull object reference, but I am not positive. To completely remove a value for a key use UserDefaults.standard.removeObject(forKey: "YourDefault") I tested with the following code: UserDefaults.standard.set(["a", "b", "c"], forKey: "MyDefaults") print("Test A: My saved de...
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What is the Oracle equivalent of SQL Server's IsNull() function?

...it does shortcut evaluation, whereas NVL always evaluates both parameters. Compare COALESCE(1,my_expensive_function) with NVL(1,my_expensive_function). – Jeffrey Kemp Aug 20 '10 at 4:17 ...
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How do you get the width and height of a multi-dimensional array?

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Is JSON Hijacking still an issue in modern browsers?

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What does “./bin/www” do in Express 4.x?

...pp.use(express.favicon()); app.use(express.logger('dev')); app.use(express.compress()); app.use(express.json()); app.use(express.urlencoded()); app.use(express.methodOverride()); In Express 4.0 however, all middleware have been removed so that they can be maintained and updated independently from ...
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What is the difference between min SDK version/target SDK version vs. compile SDK version?

What are the differences between "min sdk version/target sdk version" and "compile sdk version"? I know what min and target sdk means, but what does compile sdk version mean? ...
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Find the extension of a filename in Ruby

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