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'\"
'\" Copyright (c) 2007 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 my n 0.1 TclOO "TclOO Commands"
.so man.macros
.BS
'\" Note: do not modify the .SH NAME line immediately below!
.SH NAME
my \- invoke any method of current object
.SH SYNOPSIS
.nf
package require TclOO
\fBmy\fI methodName\fR ?\fIarg ...\fR?
.fi
.BE
.SH DESCRIPTION
.PP
The \fBmy\fR command is used to allow methods of objects to invoke methods
of the object (or its class). In particular, the set of valid values for
\fImethodName\fR is the set of all methods supported by an object and its
superclasses, including those that are not exported
.VS TIP500
and private methods of the object or class when used within another method
defined by that object or class.
.VE TIP500
The object upon which the method is invoked is the one that owns the namespace
that the \fBmy\fR command is contained in initially (\fBNB:\fR the link
remains if the command is renamed), which is the currently invoked object by
default.
.PP
Each object has its own \fBmy\fR command, contained in its instance namespace.
.SH EXAMPLES
.PP
This example shows basic use of \fBmy\fR to use the \fBvariables\fR method of
the \fBoo::object\fR class, which is not publicly visible by default:
.PP
.CS
oo::class create c {
method count {} {
\fBmy\fR variable counter
puts [incr counter]
}
}
c create o
o count \fI\(-> prints "1"\fR
o count \fI\(-> prints "2"\fR
o count \fI\(-> prints "3"\fR
.CE
.PP
This example shows how you can use \fBmy\fR to make callbacks to private
methods from outside the object (from a \fBtrace\fR), using
\fBnamespace code\fR to enter the correct context:
.PP
.CS
oo::class create HasCallback {
method makeCallback {} {
return [namespace code {
\fBmy\fR Callback
}]
}
method Callback {args} {
puts "callback: $args"
}
}
set o [HasCallback new]
trace add variable xyz write [$o makeCallback]
set xyz "called" \fI\(-> prints "callback: xyz {} write"\fR
.CE
.SH "SEE ALSO"
next(n), oo::object(n), self(n)
.SH KEYWORDS
method, method visibility, object, private method, public method
.\" Local variables:
.\" mode: nroff
.\" fill-column: 78
.\" End:
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