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lachoy (1663)
lachoy
chris.winters@gmail.com
http://www.cwinters.com/
I am actually Chris Winters; I am actually living in Pittsburgh, Pennsylvania, USA; I am actually married and have three cats. (Guess what one of them is named?) I am the "OpenInteract" guy, which could be good or bad.
chris.winters@gmail.com
http://www.cwinters.com/
I am actually Chris Winters; I am actually living in Pittsburgh, Pennsylvania, USA; I am actually married and have three cats. (Guess what one of them is named?) I am the "OpenInteract" guy, which could be good or bad.
Tuesday June 21, 2005
08:10 AM
One of those java features I should have known: class.isInstance()
One of the few times I've written a piece of functionality and actually found it later: the isInstance() method of the Class class. It's useful when you're dealing with generic classes and therefore cannot use instanceof:
void ensureAllHaveParent( Collection c, Class parentClass ) {
for ( Iterator it = c.iterator(); it.hasNext(); ) {
Object o = it.next();
if ( ! ( o instanceof parentClass ) )... // WRONG!
if ( ! parentClass.isInstance( o ) )... // RIGHT!
}
}
Posted from cwinters.com; read original
Or is it a BUG?"
"Let's call it an accidental feature. :-)"
--Larry Wall in <6909@jpl-devvax.JPL.NASA.GOV>
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