Map Effect

This page is auto-generated from src/stdlib.rs. Do not edit it by hand — your changes will be overwritten on the next CI run. To add or update a built-in operation, edit the StdLib::new() registry in src/stdlib.rs.

Map Effect

The Map effect provides the following built-in operations, wired into the VM and runtime.

Operation	Signature	Description
Map.new	new() -> Map	Create an empty mutable hash map (open addressing).
Map.insert	insert(m: Map, k: T, v: U) -> Map	Insert key k with value v (overwrites existing); may grow and return a new pointer.
Map.get	get(m: Map, k: T) -> U	Look up key k; returns nil when absent. String keys compare by content.
Map.contains	contains(m: Map, k: T) -> Bool	True when key k is present.
Map.remove	remove(m: Map, k: T) -> Map	Remove key k if present (marks a tombstone).
Map.size	size(m: Map) -> Int	Return the number of live key-value pairs.

Implementation site: Standalone VM