56 lines
1.3 KiB
Plaintext
56 lines
1.3 KiB
Plaintext
'\"
|
|
'\" Copyright (c) 1993 The Regents of the University of California.
|
|
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
|
|
'\" Copyright (c) 2001 Kevin B. Kenny <kennykb@acm.org>. All rights reserved.
|
|
'\"
|
|
'\" See the file "license.terms" for information on usage and redistribution
|
|
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
|
'\"
|
|
.TH llength n "" Tcl "Tcl Built-In Commands"
|
|
.so man.macros
|
|
.BS
|
|
'\" Note: do not modify the .SH NAME line immediately below!
|
|
.SH NAME
|
|
llength \- Count the number of elements in a list
|
|
.SH SYNOPSIS
|
|
\fBllength \fIlist\fR
|
|
.BE
|
|
.SH DESCRIPTION
|
|
.PP
|
|
Treats \fIlist\fR as a list and returns a decimal string giving
|
|
the number of elements in it.
|
|
.SH EXAMPLES
|
|
.PP
|
|
The result is the number of elements:
|
|
.PP
|
|
.CS
|
|
% \fBllength\fR {a b c d e}
|
|
5
|
|
% \fBllength\fR {a b c}
|
|
3
|
|
% \fBllength\fR {}
|
|
0
|
|
.CE
|
|
.PP
|
|
Elements are not guaranteed to be exactly words in a dictionary sense
|
|
of course, especially when quoting is used:
|
|
.PP
|
|
.CS
|
|
% \fBllength\fR {a b {c d} e}
|
|
4
|
|
% \fBllength\fR {a b { } c d e}
|
|
6
|
|
.CE
|
|
.PP
|
|
An empty list is not necessarily an empty string:
|
|
.PP
|
|
.CS
|
|
% set var { }; puts "[string length $var],[\fBllength\fR $var]"
|
|
1,0
|
|
.CE
|
|
.SH "SEE ALSO"
|
|
list(n), lappend(n), lindex(n), linsert(n), lsearch(n),
|
|
lset(n), lsort(n), lrange(n), lreplace(n)
|
|
.SH KEYWORDS
|
|
element, list, length
|