Ralf Hemmecke wrote:
>
> This is somehow related to
> http://groups.google.com/group/fricas-devel/msg/d2befd705391861f
>
> While looking at jet.spad.pamphlet, I saw something like this.
>
> until empty? LD1 repeat
> ...
>
> https://github.com/hemmecke/fricas/blob/master/src/algebra/jet.spad.pamphlet#L1085
>
> The Axiom Book doesn't mention "until" as a keyword. Aldor also doesn't
> have "until".
>
> In fact, the way it is used, it is just an abbreviation for "while not".
>
> In order to keep the language as simple as possible, I strongly vote for
> removing the "until" keyword.
>
As Gaby noted semantics of "until" and "while not" differ.
"until" is rarely needed, but somewhat several languages have
it. Personally given that it is rarely needed I would
probably not implement it. But since it is already implemented
I see no strong reason to remove it.
--
Waldek Hebisch
[email protected]
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