Built-In Commands - llength manual page

Tcl/Tk

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Tcl/Tk Applications | Tcl Commands | Tk Commands | Tcl Library | Tk Library

NAME

llength - Count the number of elements in a list

SYNOPSIS

llength list

DESCRIPTION

Treats list as a list and returns a decimal string giving the number of elements in it.

EXAMPLES

The result is the number of elements: 
% llength {a b c d e}
5
% llength {a b c}
3
% llength {}
0

Elements are not guaranteed to be exactly words in a dictionary sense of course, especially when quoting is used: 

% llength {a b {c d} e}
4
% llength {a b { } c d e}
6

An empty list is not necessarily an empty string: 

% set var { }; puts "[string length $var],[llength $var]"
1,0

SEE ALSO

list, lappend, lindex, linsert, lsearch, lset, lsort, lrange, lreplace

KEYWORDS

element, list, length
Copyright © 1995-1997 Roger E. Critchlow Jr. Copyright © 1993 The Regents of the University of California. Copyright © 1994-1996 Sun Microsystems, Inc. Copyright © 2001 Kevin B. Kenny <kennykb(at)acm.org>. All rights reserved.

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