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Selectors in Objective-C?
..., I'm not sure I really understand what a selector is. From my understanding, it's the name of a method, and you can assign it to a class of type 'SEL' and then run methods such as respondToSelector to see if the receiver implements that method. Can someone offer up a better explanation?
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Wait for a process to finish
Is there any builtin feature in Bash to wait for a process to finish?
14 Answers
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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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How to rollback a specific migration?
I have the following migration file db\migrate\20100905201547_create_blocks.rb
14 Answers
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Using MySQL with Entity Framework [closed]
Can't find anything relevant about Entity Framework/MySQL on Google so I'm hoping someone knows about it.
10 Answers
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Modular multiplicative inverse function in Python
Does some standard Python module contain a function to compute modular multiplicative inverse of a number, i.e. a number y = invmod(x, p) such that x*y == 1 (mod p) ? Google doesn't seem to give any good hints on this.
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How to capture a list of specific type with mockito
Is there a way to capture a list of specific type using mockitos ArgumentCaptore. This doesn't work:
8 Answers
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Removing elements by class name?
I have the below code to find elements with their class name:
16 Answers
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Java volatile reference vs. AtomicReference
...any difference between a volatile Object reference and AtomicReference in case I would just use get() and set() -methods from AtomicReference ?
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What is the LD_PRELOAD trick?
...oss a reference to it recently on proggit and (as of now) it is not explained.
9 Answers
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