I don't understand why this code is not working

[mbauman]

Hi @Nimpa, welcome! Looks like you already started a topic for this — let’s try to keep things consolidated there.

Why is this code not working?

The function below is to calculate the fibonacci sequence using get! but i don’t understand why it is not working. global fib_cache = Dict{BigInt, BigInt}(0 => 0, 1 => 1) function fib(n::Integer) global fib_cache get!(fib_cache, BigInt(n), fib(n‑1) + fib(n‑2)) end