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What's quicker and better to determine if an array key exists in PHP?

... isset() is faster, but it's not the same as array_key_exists(). array_key_exists() purely checks if the key exists, even if the value is NULL. Whereas isset() will return false if the key exist and value is NULL. ...
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Transitioning from Windows Forms to WPF

...erstanding the change in mindset when switching from WinForms to WPF What is this "DataContext" you speak of? A Simple MVVM Example To summarize, the biggest difference between Winforms and WPF is that in WPF your data layer (the DataContext) is your application, while in Winforms your UI layer i...
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“register” keyword in C?

What does the register keyword do in C language? I have read that it is used for optimizing but is not clearly defined in any standard. Is it still relevant and if so, when would you use it? ...
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How can I check whether a radio button is selected with JavaScript?

...o buttons within an HTML form. A dialog box appears when one of the fields is null. How can I check whether a radio button is selected? ...
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How does this print “hello world”?

I discovered this oddity: 9 Answers 9 ...
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Actual examples for HATEOAS (REST-architecture) [closed]

as everyone may have noticed, there are lot of fake/rudimentary REST-APIs in the wild (which implement a HTTP-API and call it REST without following the hypertext-as-the-engine-of-application-state requirement, which led to the famous rant of Roy T. Fielding , the man who first specified the REST-p...
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Convert boolean result into number/integer

...se or true , but I need 0 or 1 instead, respectively. How can I do this? 17 Answers ...
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Is it necessary to explicitly remove event handlers in C#

I have a class that offers up a few events. That class is declared globally but not instanced upon that global declaration--it's instanced on an as-needed basis in the methods that need it. ...
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How to get root access on Android emulator?

... share | improve this answer | follow | answered Oct 17 '16 at 23:39 JRaymondJRaymond ...
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Where to put model data and behaviour? [tl; dr; Use Services]

...S for my latest project. In the documentation and tutorials all model data is put into the controller scope. I understand that is has to be there to be available for the controller and thus within the corresponding views. ...