tcldoc Tcl/Tk 9.0.4
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HomeTcl Built-In Commands Tcl

llength

Count the number of elements in a list

literal type exactly as shown argument replace with your value ?optional? may be omitted

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

Keywords#

element · list · length

Copyright#