dict = Dict("hello" => 13, "world" => 31, "!" => 71)

# applying a function to key-value pairs:
foreach(println, dict)

# iterating over key-value pairs:
for (key, value) in dict
    println("dict[$key] = $value")
end

# iterating over keys:
for key in keys(dict)
    @show key
end

# iterating over values:
for value in values(dict)
    @show value
end
