scala - Access element of an Array and return a monad? -

if access index outside bounds of array, arrayindexoutofboundsexception, eg:

val = new array[string](3) a(4) java.lang.arrayindexoutofboundsexception: 4

is there method return monad instead (eg: option)? , why doesn't default collections apply method array support this?

you can use lift:

a.lift(4) // none a.lift(2) // some(null)

array[t] partialfunction[int, t] , lift creates function[int, option[t]] index option of element type.

Lix