15 lines
452 B
Racket
15 lines
452 B
Racket
#lang scribble/doc
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@(require "common.ss"
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(for-label syntax/free-vars))
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@title[#:tag "free-vars"]{Computing the Free Variables of an Expression}
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@defmodule[syntax/free-vars]
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@defproc[(free-vars [expr-stx syntax?]) (listof identifier?)]{
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Returns a list of free @scheme[lambda]- and @scheme[let]-bound
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identifiers in @scheme[expr-stx]. The expression must be fully
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expanded (see @secref[#:doc refman "fully-expanded"] and
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@scheme[expand]).}
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