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Diffstat (limited to 'doc/linsert.n')
| -rw-r--r-- | doc/linsert.n | 37 |
1 files changed, 21 insertions, 16 deletions
diff --git a/doc/linsert.n b/doc/linsert.n index 8119955..51b64cf 100644 --- a/doc/linsert.n +++ b/doc/linsert.n @@ -1,37 +1,42 @@ '\" '\" Copyright (c) 1993 The Regents of the University of California. '\" Copyright (c) 1994-1996 Sun Microsystems, Inc. -'\" Copyright (c) 2001 Kevin B. Kenny. All rights reserved. +'\" Copyright (c) 2001 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: linsert.n,v 1.7.4.1 2004/10/27 12:52:40 dkf Exp $ -'\" -.so man.macros .TH linsert n 8.2 Tcl "Tcl Built-In Commands" +.so man.macros .BS '\" Note: do not modify the .SH NAME line immediately below! .SH NAME linsert \- Insert elements into a list .SH SYNOPSIS -\fBlinsert \fIlist index element \fR?\fIelement element ...\fR? +\fBlinsert \fIlist index \fR?\fIelement element ...\fR? .BE - .SH DESCRIPTION .PP This command produces a new list from \fIlist\fR by inserting all of the \fIelement\fR arguments just before the \fIindex\fR'th element of \fIlist\fR. Each \fIelement\fR argument will become a separate element of the new list. If \fIindex\fR is less than or equal to zero, then the new -elements are inserted at the beginning of the list. If \fIindex\fR has the -value \fBend\fR, or if it is greater than or equal to the number of -elements in the list, then the new elements are appended to the list. -\fBend\-\fIinteger\fR refers to the last element in the list minus the -specified integer offset. +elements are inserted at the beginning of the list, and if \fIindex\fR is +greater or equal to the length of \fIlist\fR, it is as if it was \fBend\fR. +As with \fBstring index\fR, the \fIindex\fR value supports both simple index +arithmetic and end-relative indexing. +.PP +Subject to the restrictions that indices must refer to locations inside the +list and that the \fIelement\fRs will always be inserted in order, insertions +are done so that when \fIindex\fR is start-relative, the first \fIelement\fR +will be at that index in the resulting list, and when \fIindex\fR is +end-relative, the last \fIelement\fR will be at that index in the resulting +list. .SH EXAMPLE +.PP Putting some values into a list, first indexing from the start and then indexing from the end, and then chaining them together: +.PP .CS set oldList {the fox jumps over the dog} set midList [\fBlinsert\fR $oldList 1 quick] @@ -39,12 +44,12 @@ set newList [\fBlinsert\fR $midList end-1 lazy] # The old lists still exist though... set newerList [\fBlinsert\fR [\fBlinsert\fR $oldList end-1 quick] 1 lazy] .CE - .SH "SEE ALSO" -.VS 8.4 list(n), lappend(n), lindex(n), llength(n), lsearch(n), -lset(n), lsort(n), lrange(n), lreplace(n) -.VE - +lset(n), lsort(n), lrange(n), lreplace(n), +string(n) .SH KEYWORDS element, insert, list +'\" Local Variables: +'\" mode: nroff +'\" End: |