Alias fib
Common vernacular for fibonacci
alias fib
= fibonacci;
Example
import std .array: array;
auto fibs = iota(1, 21) .map!(n => fib(n)) .array;
assert(fibs == [1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144,
233, 377, 610, 987, 1597, 2584, 4181, 6765]);