0x00 Lesson
The print() function prints something to the screen, but always adds a new line to the end of whatever you printed, so that multiple calls to print() don't all appear on the same line.
You can change that behavior if you want, so you could use spaces rather than line breaks. Most of the time, though, folks want new lines, so print() has a terminator parameter that uses new line as its default value.
You can give your own parameters a default value just by writing an = after its type followed by the default you want to give it. So, we could write a greet() function that can optionally print nice greetings:
func greet(_ person: String, nicely: Bool = true) {
if nicely == true {
print("Hello, \(person)!")
} else {
print("Oh no, it's \(person) again...")
}
}That can be called in two ways:
greet("Taylor")
greet("Taylor", nicely: false)0x01 我的小作品
欢迎体验我的作品之一：小编辑器-XCompiler 在线编辑器~小而巧
App Store 搜索即可~
