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Member "SAOImageDS9/tcl8.6/doc/lappend.n" (13 Nov 2019, 1520 Bytes) of package /linux/misc/ds9.8.1.tar.gz:


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lappend

NAME
SYNOPSIS
DESCRIPTION
EXAMPLE
SEE ALSO
KEYWORDS

NAME

lappend − Append list elements onto a variable

SYNOPSIS

lappend varName ?value value value ...?

DESCRIPTION

This command treats the variable given by varName as a list and appends each of the value arguments to that list as a separate element, with spaces between elements. If varName does not exist, it is created as a list with elements given by the value arguments. Lappend is similar to append except that the values are appended as list elements rather than raw text. This command provides a relatively efficient way to build up large lists. For example, is much more efficient than when $a is long.

EXAMPLE

Using lappend to build up a list of numbers.

% set var 1 1 % lappend var 2 1 2 % lappend var 3 4 5 1 2 3 4 5

SEE ALSO

list(n), lindex(n), linsert(n), llength(n), lset(n), lsort(n), lrange(n)

KEYWORDS

append, element, list, variable