Anonymous recursion
editable example
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ghul
use IO.Std.write_line
let fibonacci = n =>
assert n >= 0 else "fibonacci is not defined for a negative argument" in
(i rec => if i < 2 then i else rec(i - 1) + rec(i - 2) fi)(n)
for n in 0::10 do
write_line("fibonacci({n}) = {fibonacci(n)}")
od