extend("array")
# Basic usage: array:nth(index, data)
sput( array:nth(0, ["A", "B", "C"]) )
# => "A"
sput( array:nth(-1, ["A", "B", "C"]) )
# => "C" (last element)
# If out of range, it returns '_', i.e. a Placeholder.
# Partial usage examples:
# 1) Provide only the index
getThird = array:nth(2)
sput( getThird([10,20,30,40]) )
# => 30
nthFromArr = array:nth(_, [5,6,7,8])
sput( nthFromArr(-2) )
# 3) Provide neither argument => returns a partial function requiring 2 calls
nthFunc = array:nth()
# Then apply the index:
idxFunc = nthFunc(1)
# Then apply the array:
sput( idxFunc(["Alpha","Beta"]) )
# => "Beta"