如何在 swift 语句中使用数组的更多值？
代码:
var array = ["Beer", "Water", "Cola", "Sprite", "Wodka"]
var drinks = "" // The variable drinks updates with a pickerView of the above array
func doSomethingWithArray() {
if drinks == array[1] {
print("this is water, so no sugar in it")
} else if drinks == array[2,3] {
print("This drink contains sugar")
} else {
print("This drink is alcoholic")
}
有没有像在 else if 语句中那样使用多个数组值的简单方法？但这是一种可行的方法。 :)
最佳答案
如果我理解你的问题是正确的，在这种情况下你可以使用 contains。
let myDrink = "Cola"
let sweetDrinks = ["Cola", "Sprite"]
if sweetDrinks.contains(myDrink) {
print(myDrink, "is a sweet drink")
}
要进行更复杂的检查，请使用 Set。例如:
let myDrinks = Set(["Beer", "Water", "Cola", "Vodka", "Tonic"])
let sweetDrinks = ["Cola", "Sprite", "Tonic"]
// Show myDrinks which are also sweet drinks
let mySweetDrinks = myDrinks.intersect(sweetDrinks)
print(mySweetDrinks) // prints ["Tonic", "Cola"]
关于ios - 可能性数组的(快速)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37707491/