In the Io language, how can you see the implementation of "if"?

Question

I was poking around some of Core and Object using "getSlot("method name") to see how some foundational methods were implemented. I was curious about how the if method was written and tried

Io> Object getSlot("if")
==> Object_if()
Io> Object getSlot("Object_if()")
==> nil

Neither of these were informative. Is there a way to reflect/inspect/print this (and other Object_keywordishword() words)?

Answer 1

I gave a talk to a group in New York a while back which included a cleanroom implementation of if if you're curious about the mechanics. You can see it here.

More directly, when you see:

==> Object_if()

In the REPL, what that's telling you is that if is a symbol bound to the object Object which is implemented in C. That is to say, the "method" is actually a CFunction object, and not a Block object. Only Block objects show their source in the REPL.