Is your feature request related to a problem?
Function arguments are always mutable, however they shouldn’t, to be in line with the language philosophy.
There is also no way of passing references to big lists to functions, to avoid copying them. Copying data and not passing hidden references is good, though we should be able to explicitly request a reference when defining a function.
Describe the solution you would like
I’d like to be able to write something like
(let foo (fun (x (mut y) (ref data))
…))
Setting the mutability or immutability of an argument would only impact the NameScopeResolver that does the checks for this.
Specifying an argument as a ref is harder and will need modifications to operators, type checking, builtins, scope resolver (as ref will be mutable by default).
Is it a big modification to the language? Leave it if you don't know
Is your feature request related to a problem?
Function arguments are always mutable, however they shouldn’t, to be in line with the language philosophy.
There is also no way of passing references to big lists to functions, to avoid copying them. Copying data and not passing hidden references is good, though we should be able to explicitly request a reference when defining a function.
Describe the solution you would like
I’d like to be able to write something like
Setting the mutability or immutability of an argument would only impact the NameScopeResolver that does the checks for this.
Specifying an argument as a ref is harder and will need modifications to operators, type checking, builtins, scope resolver (as ref will be mutable by default).
Is it a big modification to the language? Leave it if you don't know