purescript/purescript — pull request #381 by paf31 (2014-04-19 21:15:36+00:00)
Title: Initial implementation of type wildcards

For #287 Partial Type Signatures

@garyb @joneshf @puffnfresh for your consideration ...

I'd also like to add the ability to label a wildcard so that two wildcards can be declared equal:

```
foo :: _a -> _a -> Boolean
```

but I can't decide on a good syntax.