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From: "Jeffrey R. Carter" <spam.jrcarter.not@nospam.acm.org>
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Subject: Re: Ada vs Eiffel - Ada programmer approach
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ardjussi wrote:
> 
> Is it a common expression? Was the word "contract" alone in use in
> program design or programming before DbC was coined? For me the single
> word was totally new for any meaning in computer programming at
> something 1990. The phrase "design by contract" may have occasionally
> appeared in sales of construction or even program design services, but
> not as a technical term.

The term "contract model" to describe Ada package specifications has been around 
for quite a while. I think I first heard a package specification described as a 
contract in 1984.

-- 
Jeff Carter
"You tiny-brained wipers of other people's bottoms!"
Monty Python & the Holy Grail
18