How to get the name of a parameter function in runtime?

Question

Is there a convenient way to check the name of a function which is a parameter of another function? For example,

(defn foo [a-fun] ...)

how should one get the actual name of a-fun inside foo in runtime?

Why do you need it? What if I pass an anonymous one? – coredump Sep 22 '15 at 21:00 — coredump, Sep 22 '15 at 21:00

score 1 · Answer 1 · edited May 23 '17 at 11:58

1

If you want to get the name of a function, why not pass it as parameter ? You can get the fully qualified name of a function by using resolve. Your code would then be called like that :

(defn foo [a-fun]
    ;; no need to do anything to get the name
)

(foo (resolve 'bar))

edited May 23 '17 at 11:58

Community

1
1

answered Sep 22 '15 at 17:45

nha

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my case is about debug. i need to trace out which function does what. – 象嘉道 Sep 23 '15 at 13:12

score 0 · Answer 2 · answered Sep 23 '15 at 03:13

No, there is no way to get the name of a function. Why? Because functions do not have names. They might be bound to names in some instances, but even when you define a name for a function, the function itself does not have a name.

For example, if you run:

(macroexpand '(defn foo []))

You wil get:

(def foo (clojure.core/fn ([])))

As you can see, defn is merely a macro that creates an anonymous function and binds it to a name.

How to get the name of a parameter function in runtime?

2 Answers2