CODEWITHSUNDEEP
functionvariableserlangglobal
bkach
bkach

Reputation: 3

Variable Availability in Erlang

I am wondering if it is possible to have a function get a variable if it is not passed explicitly.

The issue is mainly about cleaning up my code, as I have many functions that need to pass every variable that will ever be used to the next function.

In SML for example, one could easily accomplish this with something like:

fun myFun varx vary varz
   let
     fun otherFun () = varx
     fun otherFun2 () = vary
   in
     otherFun() + otherFun()
end

Is there a way to allow other functions to see variables that are not explicitly passed to it? Or is this just not the way one would program in erlang?

Upvotes: 0

Views: 136

Answers (1)

jowi
jowi

Reputation: 26

Erlang variable scope works much in the same way:

E.g:

add_two(X) ->
 F = fun(Y) ->
         X + Y
     end,
  F(2).

Hope this helps.

Upvotes: 1

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