cassette-fizzbuzz.jl

using Cassette

Cassette.@context FizzBuzzCtx

function Cassette.overdub(ctx::FizzBuzzCtx, ::typeof(string), i::Integer)
    if i % 3 == 0
        if i % 5 == 0
            "fizzbuzz"
        else
            "fizz"
        end
    else
        if i % 5 == 0
            "buzz"
        else
            string(i)            
        end
    end
end

function printnums(n)
    for i = 1:n
        println(i)
    end
end

Cassette.overdub(FizzBuzzCtx(), printnums, 100)