What is the better way to remove an object from an Array in Swift?
var testArray:[SomeObject]
let willRemoveObj:SomeObject
...
testArray = testArray.filter({ $0 != willRemoveObj })
or
guard let index = testArray.indexOf(willRemoveObj) else {
return
}
testArray.removeAtIndex(index)
There is no convenient method in the Foundation. But we can extend Array structure with needed one. Consider this:
extension Array where Element: Equatable {
mutating func remove(object: Element) {
if let index = index(of: object) {
remove(at: index)
}
}
}
var testArray: Array<Int> = [1, 2]
let toBeRemoved: Int = 1
testArray.remove(object: toBeRemoved)
testArray
Results in
[2]
mutating func remove(_ object: Element) would make your Swift 3 version adhere to the Swift API design guidelines.func remove(at index: Int) -> Element function and the "Otherwise, if the first argument forms part of a grammatical phrase, omit its label" rule applies to mutating func remove(_ object: Element) function. :)mutating func remove(_ member: Element) function also follows the "Swift API design guidelines" in the way that I described. The difference between remove(at index: Int) and remove(_ member: Element) is that with the former removes the element at the index and the latter removes the member. That all said, I agree that you perspective should be more important than mine! Thanks for your time, appreciate it. :)
willRemoveObjor only the first (or only) one.