From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <f131d5fe529220c83beafeab2aca42a8@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] useful language extension, or no?
From: "rob pike, esq." <rob@plan9.bell-labs.com>
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Date: Tue, 16 Jul 2002 12:50:04 -0400
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> What about the promotion of a structure from itself
> to one of its members in a function call simply because
> it makes locking a structure easier?  Surely passing in
> a pointer to a function and having the in-func pointer completely
> different violates some standard of programming languages.

It's called inheritance.

> Why was it worthwhile to change the language in this respect,
> for the idiom of "always having to make sure the lock is the
> first item in the structure for pointer coersion is a pain?"

Yes.

-rob