On Nov 18, 6:48 pm, samppi <[EMAIL PROTECTED]> wrote:
> I'm trying to unit-test a library with which a user can define methods
> on the library's multi-function to change its behavior. So I need to
> be able to define lexically-scoped methods in each test. Is it
> possible to use let to create a lexically-scoped method?
>
> The problems I'm encountering are that, unlike for functions, there
> doesn't seem to be a special-form for creating methods, and that even
> if it could be defined it'd go in the current namespace instead of the
> library's namespace. But does anyone know how I can test this anyway?
>
> Thanks in advance!
Yes, this is all possible.
fn is the special form that creates new functions.
(fn [x] (* x x)) returns an anonymous function.
You can also use let to assign names to the anonymous functions:
(let [foo (fn [x] (* x x))
(println (foo 3))
defn is a macro that translates to
(def name (fn [args] ...))
Allen
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