Tcl 9.0/Tk9.0 Documentation > Tcl Commands, version 9.0.1 > llength

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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, lassign, ledit, lindex, linsert, lmap, lpop, lrange, lremove, lrepeat, lreplace, lreverse, lsearch, lseq, lset, lsort

KEYWORDS

element, list, length
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Copyright © 2001 Kevin B. Kenny <kennykb(at)acm.org>. All rights reserved.