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What is the rationale behind having companion objects in Scala?
Is there a case where a companion object (singleton) for a class is needed? Why would I want to create a class, say Foo and also create a companion object for it?
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Why is list initialization (using curly braces) better than the alternatives?
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In php, is 0 treated as empty?
Code will explain more:
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How can I disable ARC for a single file in a project?
I am using ARC successfully in my project. However, I have encountered a few files (e.g., in unit tests and mock objects) where the rules of ARC are a little more fragile right now. I recall hearing that there was a way to disable ARC on a per-file basis, though I have been unable to find this optio...
Sorting object property by values
If I have a JavaScript object such as:
38 Answers
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When NOT to call super() method when overriding?
When I make my own Android custom class, I extend its native class. Then when I want to override the base method, I always call super() method, just like I always do in onCreate , onStop , etc.
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How do I *really* justify a horizontal menu in HTML+CSS?
You find plenty of tutorials on menu bars in HTML, but for this specific (though IMHO generic) case, I haven't found any decent solution:
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'const string' vs. 'static readonly string' in C#
In C#, what's the difference between
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What's the difference between design patterns and architectural patterns?
When we read about design patterns on the internet we note that there are 3 categories:
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Simple way to repeat a String in java
I'm looking for a simple commons method or operator that allows me to repeat some String n times. I know I could write this using a for loop, but I wish to avoid for loops whenever necessary and a simple direct method should exist somewhere.
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