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Asked: 2026-05-19T00:55:50+00:00

I am new to Erlang. If I do this H = fun(X) -> X*X.

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I am new to Erlang. If I do this

H = fun(X) -> X*X.

Then it is fine. But if I move that function to a module, it says “Illegal Expression”. For example this

H = misc_functions:square.

Please help.

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1 Answer

  1. Editorial Team

    Erlang function references require the keyword fun and the arity. Suppose that square takes a single parameter, the correct assignment is:

    H = fun misc_function:square/1
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