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Out of interest why does this work in Scala:
val exceptions = List[Char]('+')
assertTrue(exceptions.contains('+'))
but this not
val exceptions = new Array[Char]('+')
assertTrue(exceptions.contains('+'))
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Following are the point of difference between lists and array in Scala: Lists are immutable whereas arrays are mutable in Scala. Lists represents a linked list whereas arrays are flat.
contains() function in Scala is used to check if a list contains the specific element sent as a parameter. list. contains() returns true if the list contains that element.
In a Scala list, each element need not be of the same data type.
Contains() ought to be around 50 nanoseconds. So the overall operation takes 50.05 microseconds. A faster Contains might take half the time, the overall operation takes 50.025 microseconds.
Because you wrote new ArrayChar. Doing that, the argument is the size of the array, and the '+' is, rather unfortunately, converted to an int to give the size. And the returned array is full of Char(0).
You should just do Array[Char]('+'), '+' would then be single element in the Array.
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