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What is the Git equivalent for revision number?
We use SVN at work, but for my personal projects I decided to use Git. So I installed Git yesterday, and I wonder what is the revision number equivalent in Git .
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Does JavaScript have the interface type (such as Java's 'interface')?
... you can create an object with the proper methods, which would make it conform to the interface, and then undefine all the stuff that made it conform. It'd be so easy to subvert the type system -- even accidentally! -- that it wouldn't be worth it to try and make a type system in the first place.
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RSpec: how to test if a method was called?
...g RSpec tests, I find myself writing a lot of code that looks like this in order to ensure that a method was called during the execution of a test (for the sake of argument, let's just say I can't really interrogate the state of the object after the call because the operation the method performs is ...
git ignore all files of a certain type, except those in a specific subfolder
I have a directory structure like this:
1 Answer
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Check if null Boolean is true results in exception
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When you have a boolean it can be either true or false. Yet when you have a Boolean it can be either Boolean.TRUE, Boolean.FALSE or null as any other object.
In your particular case, your Boolean is null and the if statement triggers an implicit conversion to boolean th...
Swift how to sort array of custom objects by property value
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var images : [imageFile] = []
Then you can simply do:
Swift 2
images.sorted({ $0.fileID > $1.fileID })
Swift 3+
images.sorted(by: { $0.fileID > $1.fileID })
The example above gives desc sort order
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In c# is there a method to find the max of 3 numbers?
Like Math.Max but takes 3 or params of int?
10 Answers
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Rails “validates_uniqueness_of” Case Sensitivity
.../server processes (e.g. running Phusion Passenger, multiple Mongrels, etc) or a multi-threaded server. That's because you might get this sequence of events (the order is important):
Process A gets a request to create a new user with the name 'foo'
Process B does the same thing
Process A validates...
What's wrong with overridable method calls in constructors?
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On invoking overridable method from constructors
Simply put, this is wrong because it unnecessarily opens up possibilities to MANY bugs. When the @Override is invoked, the state of the object may be inconsistent and/or incomplete.
A quote from Effective Java 2nd Editi...
how does Array.prototype.slice.call() work?
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What happens under the hood is that when .slice() is called normally, this is an Array, and then it just iterates over that Array, and does its work.
How is this in the .slice() function an Array? Because when you do:
object.method();
...the object automatically becomes the value o...