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| author | William Joye <wjoye@cfa.harvard.edu> | 2016-12-21 22:56:22 (GMT) |
|---|---|---|
| committer | William Joye <wjoye@cfa.harvard.edu> | 2016-12-21 22:56:22 (GMT) |
| commit | 98acd3f494b28ddd8c345a2bb9311e41e2d56ddd (patch) | |
| tree | da1cf11e12bf524556ed195b9e811ee39fefa84b /doc/llength.n | |
| download | blt-98acd3f494b28ddd8c345a2bb9311e41e2d56ddd.zip blt-98acd3f494b28ddd8c345a2bb9311e41e2d56ddd.tar.gz blt-98acd3f494b28ddd8c345a2bb9311e41e2d56ddd.tar.bz2 | |
Squashed 'tcl8.6/' content from commit fcdc201
git-subtree-dir: tcl8.6
git-subtree-split: fcdc2019beb26eb8141c5ffc289e8de28bd07aa5
Diffstat (limited to 'doc/llength.n')
| -rw-r--r-- | doc/llength.n | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/doc/llength.n b/doc/llength.n new file mode 100644 index 0000000..79f93c0 --- /dev/null +++ b/doc/llength.n @@ -0,0 +1,55 @@ +'\" +'\" 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 |