Module builtins 

Built-in word signatures for Seq

Defines the stack effects for all runtime built-in operations.

Uses declarative macros to minimize boilerplate. The builtin! macro supports a Forth-like notation: (a Type1 Type2 -- a Type3) where:

• a is the row variable (representing “rest of stack”)
• Concrete types: Int, String, Float
• Type variables: single uppercase letters like T, U, V

Functions

builtin_doc

Get documentation for a built-in word

builtin_docs

Get all built-in word documentation (cached with LazyLock for performance)

builtin_signature

Get the stack effect signature for a built-in word

builtin_signatures

Get all built-in word signatures