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Diffstat (limited to 'doc/lset.n')
| -rwxr-xr-x | doc/lset.n | 55 |
1 files changed, 36 insertions, 19 deletions
@@ -1,10 +1,10 @@ '\" -'\" Copyright (c) 2001 by Kevin B. Kenny. All rights reserved. +'\" Copyright (c) 2001 by Kevin B. Kenny <kennykb@acm.org>. All rights reserved. '\" '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: lset.n,v 1.6.2.1 2003/12/01 21:29:34 msofer Exp $ +'\" RCS: @(#) $Id: lset.n,v 1.15 2008/03/26 09:59:22 dkf Exp $ '\" .so man.macros .TH lset n 8.4 Tcl "Tcl Built-In Commands" @@ -52,9 +52,11 @@ command. If \fIindex\fR is negative or greater than or equal to the number of elements in \fI$varName\fR, then an error occurs. .PP -If \fIindex\fR has the value \fBend\fR, it refers to the last element -in the list, and \fBend\-\fIinteger\fR refers to the last element in -the list minus the specified integer offset. +.VS 8.5 +The interpretation of each simple \fIindex\fR value is the same as +for the command \fBstring index\fR, supporting simple index +arithmetic and indices relative to the end of the list. +.VE 8.5 .PP If additional \fIindex\fR arguments are supplied, then each argument is used in turn to address an element within a sublist designated @@ -78,36 +80,51 @@ of a list. If an index is outside the permitted range, an error is reported. In each of these examples, the initial value of \fIx\fR is: .CS set x [list [list a b c] [list d e f] [list g h i]] - => {a b c} {d e f} {g h i} + \fI\(-> {a b c} {d e f} {g h i}\fR .CE The indicated return value also becomes the new value of \fIx\fR (except in the last case, which is an error which leaves the value of \fIx\fR unchanged.) .CS -lset x {j k l} => j k l -lset x {} {j k l} => j k l -lset x 0 j => j {d e f} {g h i} -lset x 2 j => {a b c} {d e f} j -lset x end j => {a b c} {d e f} j -lset x end-1 j => {a b c} j {g h i} -lset x 2 1 j => {a b c} {d e f} {g j i} -lset x {2 1} j => {a b c} {d e f} {g j i} -lset x {2 3} j => \fIlist index out of range\fR +\fBlset\fR x {j k l} + \fI\(-> j k l\fR +\fBlset\fR x {} {j k l} + \fI\(-> j k l\fR +\fBlset\fR x 0 j + \fI\(-> j {d e f} {g h i}\fR +\fBlset\fR x 2 j + \fI\(-> {a b c} {d e f} j\fR +\fBlset\fR x end j + \fI\(-> {a b c} {d e f} j\fR +\fBlset\fR x end-1 j + \fI\(-> {a b c} j {g h i}\fR +\fBlset\fR x 2 1 j + \fI\(-> {a b c} {d e f} {g j i}\fR +\fBlset\fR x {2 1} j + \fI\(-> {a b c} {d e f} {g j i}\fR +\fBlset\fR x {2 3} j + \fI\(-> list index out of range\fR .CE In the following examples, the initial value of \fIx\fR is: .CS set x [list [list [list a b] [list c d]] \e [list [list e f] [list g h]]] - => {{a b} {c d}} {{e f} {g h}} + \fI\(-> {{a b} {c d}} {{e f} {g h}}\fR .CE The indicated return value also becomes the new value of \fIx\fR. .CS -lset x 1 1 0 j => {{a b} {c d}} {{e f} {j h}} -lset x {1 1 0} j => {{a b} {c d}} {{e f} {j h}} +\fBlset\fR x 1 1 0 j + \fI\(-> {{a b} {c d}} {{e f} {j h}}\fR +\fBlset\fR x {1 1 0} j + \fI\(-> {{a b} {c d}} {{e f} {j h}}\fR .CE .SH "SEE ALSO" list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n), -lsort(n), lrange(n), lreplace(n) +lsort(n), lrange(n), lreplace(n), +.VS 8.5 +string(n) +.VE + .SH KEYWORDS element, index, list, replace, set |