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+'\"
+'\" Copyright (c) 2011-2015 Andreas Kupries
+'\" Copyright (c) 2018 Donal K. Fellows
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\"
+.TH link n 0.3 TclOO "TclOO Commands"
+.so man.macros
+.BS
+'\" Note: do not modify the .SH NAME line immediately below!
+.SH NAME
+link \- create link from command to method of object
+.SH SYNOPSIS
+.nf
+package require TclOO
+
+\fBlink\fR \fImethodName\fR ?\fI...\fR?
+\fBlink\fR \fB{\fIcommandName methodName\fB}\fR ?\fI...\fR?
+.fi
+.BE
+.SH DESCRIPTION
+The \fBlink\fR command is available within methods. It takes a series of one
+or more method names (\fImethodName ...\fR) and/or pairs of command- and
+method-name (\fB{\fIcommandName methodName\fB}\fR) and makes the named methods
+available as commands without requiring the explicit use of the name of the
+object or the \fBmy\fR command. The method does not need to exist at the time
+that the link is made; if the link command is invoked when the method does not
+exist, the standard \fBunknown\fR method handling system is used.
+.PP
+The command name under which the method becomes available defaults to the
+method name, except where explicitly specified through an alias/method pair.
+Formally, every argument must be a list; if the list has two elements, the
+first element is the name of the command to create and the second element is
+the name of the method of the current object to which the command links;
+otherwise, the name of the command and the name of the method are the same
+string (the first element of the list).
+.PP
+If the name of the command is not a fully-qualified command name, it will be
+resolved with respect to the current namespace (i.e., the object namespace).
+.SH EXAMPLES
+This demonstrates linking a single method in various ways. First it makes a
+simple link, then a renamed link, then an external link. Note that the method
+itself is unexported, but that it can still be called directly from outside
+the class.
+.PP
+.CS
+oo::class create ABC {
+ method Foo {} {
+ puts "This is Foo in [self]"
+ }
+
+ constructor {} {
+ \fBlink\fR Foo
+ # The method foo is now directly accessible as foo here
+ \fBlink\fR {bar Foo}
+ # The method foo is now directly accessible as bar
+ \fBlink\fR {::ExternalCall Foo}
+ # The method foo is now directly accessible in the global
+ # namespace as ExternalCall
+ }
+
+ method grill {} {
+ puts "Step 1:"
+ Foo
+ puts "Step 2:"
+ bar
+ }
+}
+
+ABC create abc
+abc grill
+ \fI\(-> Step 1:\fR
+ \fI\(-> This is foo in ::abc\fR
+ \fI\(-> Step 2:\fR
+ \fI\(-> This is foo in ::abc\fR
+# Direct access via the linked command
+puts "Step 3:"; ExternalCall
+ \fI\(-> Step 3:\fR
+ \fI\(-> This is foo in ::abc\fR
+.CE
+.PP
+This example shows that multiple linked commands can be made in a call to
+\fBlink\fR, and that they can handle arguments.
+.PP
+.CS
+oo::class create Ex {
+ constructor {} {
+ \fBlink\fR a b c
+ # The methods a, b, and c (defined below) are all now
+ # directly acessible within methods under their own names.
+ }
+
+ method a {} {
+ puts "This is a"
+ }
+ method b {x} {
+ puts "This is b($x)"
+ }
+ method c {y z} {
+ puts "This is c($y,$z)"
+ }
+
+ method call {p q r} {
+ a
+ b $p
+ c $q $r
+ }
+}
+
+set o [Ex new]
+$o 3 5 7
+ \fI\(-> This is a\fR
+ \fI\(-> This is b(3)\fR
+ \fI\(-> This is c(5,7)\fR
+.CE
+.SH "SEE ALSO"
+interp(n), my(n), oo::class(n), oo::define(n)
+.SH KEYWORDS
+command, method, object
+.\" Local Variables:
+.\" mode: nroff
+.\" fill-column: 78
+.\" End: