$R0: Bool = true
</pre>
===イテレーター===
[https://developer.apple.com/documentation/swift/iteratorprotocol IteratorProtcol]
<pre>
let animals = ["Antelope", "Butterfly", "Camel", "Dolphin"]
var animalIterator = animals.makeIterator()
while let animal = animalIterator.next() {
print(animal)
}
</pre>
==演算子==
*C言語の演算子はほぼ使える