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What is a Java ClassLoader?

In a few simple sentences, what is a Java ClassLoader, when is it used and why? 7 Answers ...
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How to check if an app is installed from a web-page on an iPhone?

... the application installed, but if the iPhone has the app installed I want it to open the application. 10 Answers ...
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What is the difference between a weak reference and an unowned reference?

...ng the referred object). But why two keywords? This distinction has to do with the fact that Optional types are built-in the Swift language. Long story short about them: optional types offer memory safety (this works beautifully with Swift's constructor rules - which are strict in order to provide t...
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Why cast unused return values to void?

...ason for casting an unused return value to void, or am I right in thinking it's a complete waste of time? 9 Answers ...
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What's the difference between “static” and “static inline” function?

IMO both make the function to have a scope of the translation unit only. 5 Answers 5 ...
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What are the differences between Abstract Factory and Factory design patterns?

...rence was when I learnt them. Because the factory method is just a method, it can be overridden in a subclass, hence the second half of your quote: ... the Factory Method pattern uses inheritance and relies on a subclass to handle the desired object instantiation. The quote assumes that an object ...
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Good reasons to prohibit inheritance in Java?

What are good reasons to prohibit inheritance in Java, for example by using final classes or classes using a single, private parameterless constructor? What are good reasons of making a method final? ...
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Determine if variable is defined in Python [duplicate]

... runtime? This is not always obvious because (1) the variable could be conditionally set, and (2) the variable could be conditionally deleted. I'm looking for something like defined() in Perl or isset() in PHP or defined? in Ruby. ...
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How to disable typing special characters when pressing option key in Mac OS X? [closed]

... download Ukulele from here: http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=ukelele In the application you can create a new keylayout using File -> New from current source. Pressing Option will show you in the place for Option-b a red colored key - meaning it's a dead key. Doub...
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C: differences between char pointer and array [duplicate]

... True, but it's a subtle difference. Essentially, the former: char amessage[] = "now is the time"; Defines an array whose members live in the current scope's stack space, whereas: char *pmessage = "now is the time"; Defines a poi...