How to check if a symbol is resolvable in the current namespace?

Question

I want to check if a symbol is resolvable in the current namespace. What's the canonical way to do this?

Answer 1

Take a look at this page. For example

(ns-map *ns*)

will give you a map of the bindings in the current namespace. You can examine this map to decide if your symbol is a key in the map,

(defn resolvable? [sym] 
  (contains? (ns-map *ns*) sym))

I do not know if this is the canonical way.

Answer 2

After sifting through the API docs once more, I've stumbled on what might be the appropriate function:

; Returns the var or Class to which the symbol
; will be resolved in the current namespace, else nil.
  (resolve 'foo)

; see also:
  (ns-resolve *a-namespace* 'foo)