Subject: Re: [boost] painless currying
From: Hartmut Kaiser (hartmut.kaiser_at_[hidden])
Date: 2011-08-25 09:13:19
> > Could you explain what you mean by asymmetry here? That my currying
> > code prefers one function over another based on the available arguments?
>
> I mean this, for a ternary function f:
>
> f(x) => doesn't call f
> f(x)(y) => doesn't call f
> f(x)(y)(z) => calls f
>
> That last step looks asymmetric to me.
>
> In a lazy language, f(x)(y)(z) *doesn't* call f... until you actually use
> the result for something... which is more consistent-looking.
>
> I suppose the symmetrical non-lazy version looks like:
>
> f(x) => doesn't call f
> f(x)(y) => doesn't call f
> f(x)(y)(z) => doesn't call f
> f(x)(y)(z)() => calls f
... which makes it lazy again :-P
Regards Hartmut
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