Trying to declare an array of a certain size in Scala - 


var arr = array[int](arr_size) println(arr_size + " " + arr.size)

arr_size 30 arr.size 1? why this?

i trying declare empty array can fill in later @ designated indexes.

array[int](arr_size) creates array 1 element, arr_size, , commonly written array(arr_size), assuming arr_size type int.

use instead:

array.ofdim[int](arr_size).

you use more functional approach , fill array directly during initialization, e.g. array.tabulate.


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