[Swift-devel] Problem with iterate

[Ben Clifford]

> Mathematically, the two different sequences evaluate to different values:
> 
> x = y + 1
> y = x + 1
> 
> assuming y = 0, x = 1

I mean in simultaneous equations (linear algebra) - in other words, "find 
(through whatever means you care to use) a value of x and y such that the 
above two equations are both satisfied" - there is no value of x and y 
that satisfies that.

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