debian man page for lappend

Query: lappend

OS: debian

Section: 3tcl

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

lappend(3tcl)						       Tcl Built-In Commands						     lappend(3tcl)

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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, "lappend a $b" is much more efficient than "set a [concat $a [list $b]]" 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(3tcl), lindex(3tcl), linsert(3tcl), llength(3tcl), lset(3tcl), lsort(3tcl), lrange(3tcl)
KEYWORDS
append, element, list, variable Tcl lappend(3tcl)
Related Man Pages
lappend(1t) - opensolaris
concat(3tcl) - debian
foreach(3tcl) - debian
lrange(3tcl) - debian
lreplace(3tcl) - debian
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