[Haskell-beginners] Re: Closure

In article <200908151831.14649.daniel.is.fischer@web.de>, Daniel Fischer wrote:

The plus3 example is a "closure" which is hardcoded and available at compile time. I think, to say that a language allows closures means it allows closures determined at run time.

Hm. But does Haskell allow me to define a function at run time? I know Lisp can, since a function is just a data structure which we can put together at run time. But how about Haskell?