What is the function of parentheses in SAPF code? It doesn’t seem like there’s any mention of them, but they do appear in examples.
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could be wrong but really just a visual aid if you can add or omit and it won’t change the output
Parentheses are mostly a visual aid to indicate the boundaries of subexpressions — BUT they do evaluate the subexpression on an empty stack, so if the subexpression tries to take an outside value from the stack, it will be an error. This is a way to guarantee that your code is doing what you think.
Parentheses are never necessary. They can always be removed from correct code.
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