At this point, we've already seen many examples of ClojureScript functions and their associated control flows, but we haven't really covered them in explicit detail. In this section, we'll look at various branching control flow special forms and macros, and we'll cover how to handle exceptions.
Like almost every programming language, ClojureScript uses
if for basic conditional logic.
if in ClojureScript is a special form rather than a function or a macro. Syntactically,
if takes a predicate, a form that is evaluated and yielded if the predicate returns
true, and an optional form that is evaluated and yielded if the predicate returns
false. If the optional form for the
false case is not supplied, it defaults to