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extend.bsh
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/**
Return a new object that is a child of the specified object.
<strong>
Note: this command will likely change along with a better inheritance
mechanism for bsh in a future release.</strong>
<p>
extend() is like the object() command, which
creates a new bsh scripted object, except that the namespace of
the new object is a child of the parent object.
<p>
For example:
<p>
<pre>
foo=object();
bar=extend(foo);
is equivalent to:
foo() {
bar() {
return this;
}
}
foo=foo();
bar=foo.bar();
and also:
oo=object();
ar=object();
ar.namespace.bind( foo.namespace );
</pre>
<p>
The last example above is exactly what the extend() command does.
In each case the bar object inherits variables from foo in the usual way.
@method This extend( This object )
*/
bsh.help.extend= "usage: extend( This parent )";
extend( bsh.This parent )
{
this.namespace.setParent( parent.namespace );
return this;
}