Thun/implementations/Prolog/docs/reference/infra.md

(Combinator) Accept a quoted program and a list on the stack and run the program with the list as its stack. Does not affect the stack (below the list.) ... [a b c] [Q] infra

## infra (Combinator) Accept a quoted program and a list on the stack and run the program with the list as its stack. Does not affect the stack (below the list.) ... [a b c] [Q] infra

    c b a Q [...] swaack

Definition

swons swaack [i] dip swaack

Discussion

This is one of the more useful combinators. It allows a quoted expression to serve as a stack for a program, effectively running it in a kind of "pocket universe". If the list represents a datastructure then infra lets you work on its internal structure.

Crosslinks

swaack