Value Type Update Issues

[tk-codes]

Since array, struct and map are value types, the following syntax does not work.

Map

Map<char, Person> map
map['a'] = new Person(1000)

// override value
map['a'].balance = 1001
// --> map['a'] returns a copy of the struct. Changing the value will not update the map.

Struct

struct Person{
   int[] nums
}

Person p = new Person(nums = new int[2])
p.nums[0] = 1
// --> p.nums returns a copy of the array. Changes on array will not be updated on struct.

Array

Person[] p = new Person[2]
p[0] = new Person(100)

p[0].balance = 101
// --> p[0] returns a copy of the struct. Changes will not take effect.

Once VM supports reference types (bazo-blockchain/bazo-vm#28), update the compiler and test them.