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Import Tcl 8.6.10

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Steve Dower
2020-09-24 22:53:56 +01:00
parent 0343d03b22
commit 3bb8e3e086
1005 changed files with 593700 additions and 41637 deletions
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40
doc/lreplace.n
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@@ -17,7 +17,7 @@ lreplace \- Replace elements in a list with new elements
.BE
.SH DESCRIPTION
.PP
\fBlreplace\fR returns a new list formed by replacing one or more elements of
\fBlreplace\fR returns a new list formed by replacing zero or more elements of
\fIlist\fR with the \fIelement\fR arguments.
\fIfirst\fR and \fIlast\fR are index values specifying the first and
last elements of the range to replace.
@@ -27,23 +27,26 @@ supporting simple index arithmetic and indices relative to the
end of the list.
0 refers to the first element of the
list, and \fBend\fR refers to the last element of the list.
If \fIlist\fR is empty, then \fIfirst\fR and \fIlast\fR are ignored.
.PP
If \fIfirst\fR is less than zero, it is considered to refer to before the
first element of the list. For non-empty lists, the element indicated
by \fIfirst\fR must exist or \fIfirst\fR must indicate before the
start of the list.
If either \fIfirst\fR or \fIlast\fR is less than zero, it is considered
to refer to before the first element of the list. This allows \fBlreplace\fR
to prepend elements to \fIlist\fR.
.VS TIP505
If either \fIfirst\fR or \fIlast\fR indicates a position greater than the
index of the last element of the list, it is treated as if it is an
index one greater than the last element. This allows \fBlreplace\fR to
append elements to \fIlist\fR.
.VE TIP505
.PP
If \fIlast\fR is less than \fIfirst\fR, then any specified elements
will be inserted into the list before the point specified by \fIfirst\fR
will be inserted into the list before the element specified by \fIfirst\fR
with no elements being deleted.
.PP
The \fIelement\fR arguments specify zero or more new arguments to
The \fIelement\fR arguments specify zero or more new elements to
be added to the list in place of those that were deleted.
Each \fIelement\fR argument will become a separate element of
the list. If no \fIelement\fR arguments are specified, then the elements
between \fIfirst\fR and \fIlast\fR are simply deleted. If \fIlist\fR
is empty, any \fIelement\fR arguments are added to the end of the list.
between \fIfirst\fR and \fIlast\fR are simply deleted.
.SH EXAMPLES
.PP
Replacing an element of a list with another:
@@ -78,9 +81,26 @@ proc lremove {listVariable value} {
set var [\fBlreplace\fR $var $idx $idx]
}
.CE
.PP
.VS TIP505
Appending elements to the list; note that \fBend+2\fR will initially
be treated as if it is \fB6\fR here, but both that and \fB12345\fR are greater
than the index of the final item so they behave identically:
.PP
.CS
% set var {a b c d e}
a b c d e
% set var [\fBlreplace\fR $var 12345 end+2 f g h i]
a b c d e f g h i
.CE
.VE TIP505
.SH "SEE ALSO"
list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n),
lset(n), lrange(n), lsort(n),
string(n)
.SH KEYWORDS
element, list, replace
.\" Local variables:
.\" mode: nroff
.\" fill-column: 78
.\" End: