(let [spam "foo"
ham (str "b" "ar")] ; str is a function that concatenates strings
(println spam ham)) ; or converts variables into strings.
KGxldCBbc3BhbSAiZm9vIgogICAgICBoYW0gKHN0ciAiYiIgImFyIildIDsgc3RyIGlzIGEgZnVuY3Rpb24gdGhhdCBjb25jYXRlbmF0ZXMgc3RyaW5ncwogIChwcmludGxuIHNwYW0gaGFtKSkgICAgICA7IG9yIGNvbnZlcnRzIHZhcmlhYmxlcyBpbnRvIHN0cmluZ3Mu