From d04b8b0b8dffe2ae3b6ceb36f367c0a860a93cf2 Mon Sep 17 00:00:00 2001 From: Matthias Felleisen Date: Mon, 25 Jun 2012 19:59:14 -0400 Subject: [PATCH] accidentally placed 'null' in wrong file --- collects/lang/private/advanced-funs.rkt | 3 --- collects/lang/private/beginner-funs.rkt | 1 + 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/collects/lang/private/advanced-funs.rkt b/collects/lang/private/advanced-funs.rkt index 370f384e94..193ab71c0c 100644 --- a/collects/lang/private/advanced-funs.rkt +++ b/collects/lang/private/advanced-funs.rkt @@ -12,9 +12,6 @@ (require "provide-and-scribble.rkt" scribble/manual) (define pp (let ([pretty-print (lambda (v) (pretty-write v))]) pretty-print)) - -;; somehow null got lost during the scribblization -(provide null) (provide-and-scribble procedures diff --git a/collects/lang/private/beginner-funs.rkt b/collects/lang/private/beginner-funs.rkt index 24c5b3c1fb..c18297f06e 100644 --- a/collects/lang/private/beginner-funs.rkt +++ b/collects/lang/private/beginner-funs.rkt @@ -166,6 +166,7 @@ @defproc[(cons? [x any/c]) boolean?]{Determines whether some value is a constructed list.} @defproc[(empty? [x any/c]) boolean?]{Determines whether some value is the empty list.} @defproc[(null? [x any/c]) boolean?]{Determines whether some value is the empty list.} + @defproc[(null) list]{Another name for the empty list} @defproc[((beginner-cons cons) [x any/x][y list?]) list?]{Constructs a list.} @defproc[((beginner-first first) [x cons?]) any/c]{Selects the first item of a non-empty list.} @defproc[((beginner-car car) [x cons?]) any/c]{Selects the first item of a non-empty list.}