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ActiveTcl User Guide |
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lreplace - Replace elements in a list with new elements
lreplace list first last ?element element
...?
lreplace returns a new list formed by replacing one or more
elements of list with the element arguments.
first and last specify the first and last index of
the range of elements to replace. 0 refers to the first element of
the list, and end (or any abbreviation of it) may be used to
refer to the last element of the list. If list is empty,
then first and last are ignored. If first is
less than zero, it is considered to refer to the first element of
the list. For non-empty lists, the element indicated by
first must exist. If last is less than zero but
greater than first, then any specified elements will be
prepended to the list. If last is less than first
then no elements are deleted; the new elements are simply inserted
before first. The element arguments specify zero or
more new arguments to be added to the list in place of those that
were deleted. Each element argument will become a separate
element of the list. If no element arguments are specified,
then the elements between first and last are simply
deleted. If list is empty, any element arguments are
added to the end of the list.
Replacing an element of a list with another:
% lreplace {a b c d e} 1 1 foo
a foo c d e
Replacing two elements of a list with three:
% lreplace {a b c d e} 1 2 three more elements
a three more elements d e
Deleting the last element from a list in a variable:
% set var {a b c d e}
a b c d e
% set var [lreplace $var end end]
a b c d
list, lappend, lindex, linsert, llength, lsearch, lset, lrange, lsort
element, list, replace
Copyright © 1993 The Regents of the University of California.
Copyright © 1994-1996 Sun Microsystems, Inc.
Copyright © 2001 Kevin B. Kenny. All rights reserved.
Copyright © 1995-1997 Roger E. Critchlow Jr.