Metafunction.Assign

Metafunction.Assign

Performs an assignment within the stack frame

Stack effect

[<expression>, id, \Assign] => []

Environment Effect

{id -> ?} => {id -> value}

Knowledge Graph Effect

() => ()

This builtin stack function has the effect of taking an identifier from the top of the stack, plus the result of evaluating an expression, and creates/updates an entry in the environment with the value bound to the identifier.

Prerequisites:

1. The identifier MUST exist in the environment prior to dispatching the \Assign