CODEWITHSUNDEEP
erlangglobal-variables
Vlam
Vlam

Reputation: 1798

How to persists variables from Erlang program initialization for use in other functions?

From what I've Googled, there are no global variables in Erlang?

Say I have function A (initialization code) which reads some info from a binary file into a few variables. I need to persist these variables for subsequent use in function B. Function B will be called many times whenever required.

What's the recommended practice for doing this?

Upvotes: 1

Views: 71

Answers (1)

muehsi
muehsi

Reputation: 586

Ih you are looping function B and there is no change of configuration, you could just pass the configuration arguments to function B.

If configuration could be changed or it is too much overhead, I usually store the configuration paramets in an ets table. This is what I have also observed by other developers. You can also check this short ets introduction by learnyousomeerlang.

function_B(Arg1, ConfigVars) ->
    % do some stuff and modify Arg1
    function_B(Arg1_Modified, ConfigVars).

Upvotes: 1

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