Best way of Stacks in Rascal?

Question

I am sure Rascal has built in support for Stack (e.g. for expression eval via stack push/pop), but I cannot find anything.

So I now use this. However is there a nicer way?

list stack = [];

pop:

value = stack[size(stack)-1];
stack = stack - value;

push

stack = stack + value

Answer 1

I'd recommend changing pop to:

value = stack[-1]; //short hand notation
stack = delete(stack, size(stack)-1); // to make sure the last item is deleted (in case duplicates exist in the list)