On May 17, 2011, at 12:14 PM, Sam Tobin-Hochstadt wrote: > Scala has the nice feature that if you write something like this: > lst.map(_ - 1) > It automatically rewrites to a function like this: > lst.map(x => x - 1) > This makes writing some higher-order functions much easier. > > Of course, it's easy to make this using a macro and `#%app'. You can > see the result here: > github.com/samth/fancy-app > > I'm planning to put this in `unstable/app', and if there's interest > I'll think about incorporating it into the default `#%app', after some > experience with it. > > Lots of people have written similar things (`cut' in SRFI 26, Jay's > `super-cut', etc), but I'd like to move towards using it implicitly.
Just to clarify (your README is a bit terse ...): this rewrites all applications where one of the terms is the free identifier '_' . Correct me if I'm wrong. I think it's vaguely amusing that the wisdom that we've gained in developing sophisticated syntactic tools convinces us 90% of the time not to use them. John
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