How to remove an element from an array in Swift

Question

How can I unset/remove an element from an array in Apple\'s new language Swift?

Here\'s some code:

let animals = [\"cats\", \"dogs\", \"chimps\", \"m         


        

Answer 1

You could do that. First make sure Dog really exists in the array, then remove it. Add the for statement if you believe Dog may happens more than once on your array.

var animals = ["Dog", "Cat", "Mouse", "Dog"]
let animalToRemove = "Dog"

for object in animals {
    if object == animalToRemove {
        animals.remove(at: animals.firstIndex(of: animalToRemove)!)
    }
}

If you are sure Dog exits in the array and happened only once just do that:

animals.remove(at: animals.firstIndex(of: animalToRemove)!)

If you have both, strings and numbers

var array = [12, 23, "Dog", 78, 23]
let numberToRemove = 23
let animalToRemove = "Dog"

for object in array {

    if object is Int {
        // this will deal with integer. You can change to Float, Bool, etc...
        if object == numberToRemove {
        array.remove(at: array.firstIndex(of: numberToRemove)!)
        }
    }
    if object is String {
        // this will deal with strings
        if object == animalToRemove {
        array.remove(at: array.firstIndex(of: animalToRemove)!)
        }
    }
}