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(SRFI-1 Length Append etc): Add an append-reverse example.

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Kevin Ryde 2006-05-27 23:53:14 +00:00
parent 8ce0a099f7
commit 86cd2080d8
1 changed files with 7 additions and 3 deletions
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10
doc/ref/srfi-modules.texi
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@ -414,9 +414,13 @@ have a limit on the number of arguments a function takes, which the
@deffn {Scheme Procedure} append-reverse rev-head tail
@deffnx {Scheme Procedure} append-reverse! rev-head tail
Reverse @var{rev-head}, append @var{tail} and return the result. This
is equivalent to @code{(append (reverse @var{rev-head}) @var{tail})},
but more efficient.
Reverse @var{rev-head}, append @var{tail} to it, and return the
result. This is equivalent to @code{(append (reverse @var{rev-head})
@var{tail})}, but its implementation is more efficient.
@example
(append-reverse '(1 2 3) '(4 5 6)) @result{} (3 2 1 4 5 6)
@end example
@code{append-reverse!} may modify @var{rev-head} in order to produce
the result.