#!/usr/bin/ruby
# Array and hash lvalues
#
## Array
#
var arr = ['a', 'b', 'c', 'd']
arr[] = arr[^arr -> flip]
assert_eq(arr, ['d', 'c', 'b', 'a'])
arr[0,1] = arr[-1, -2]
assert_eq(arr, ['a', 'b', 'b', 'a'])
arr[] = arr[0, 1]
assert_eq(arr, ['a', 'b'])
assert_eq([arr[]], ['a', 'b'])
assert_eq([arr[^arr]], ['a', 'b'])
#
## Hash
#
var hash = Hash(a => 1, b => 2)
hash{} = (c => 3, d => 4)       # replaces the entire hash
assert_eq(hash.keys.sort, ['c', 'd'])
assert_eq(hash.values.sort, [3, 4])
hash{:c, :d, :e} = (42, 43, 44)
assert_eq(hash.keys.sort, ['c', 'd', 'e'])
hash{} = (a => 1, b => 2)
assert_eq(hash.keys.sort, ['a', 'b'])
assert_eq(hash.values.sort, [1, 2])
say "** Test passed!"