mu/immutable-error.mu

# compare mutable.mu

def main [
  local-scope
  x:&:num <- new number:type
  foo x
]

def foo x:&:num [
  local-scope
  load-ingredients
  *x <- copy 34  # will cause an error because x is immutable in this function
]
3318 Describe immutability checks in the Readme. 2016-09-10 18:43:00 +00:00			`# compare mutable.mu`

			`def main [`
			`local-scope`
3389 2016-09-17 19:55:10 +00:00			`x:&:num <- new number:type`
3318 Describe immutability checks in the Readme. 2016-09-10 18:43:00 +00:00			`foo x`
			`]`

3389 2016-09-17 19:55:10 +00:00			`def foo x:&:num [`
3318 Describe immutability checks in the Readme. 2016-09-10 18:43:00 +00:00			`local-scope`
			`load-ingredients`
			`*x <- copy 34 # will cause an error because x is immutable in this function`
			`]`