removeObject extension for Array in Swift

ArrayExtensions.swift

import Foundation

extension Array {
    func indexOfObject(object : AnyObject) -> NSInteger {
        return (self as NSArray).indexOfObject(object)
    }
    
    mutating func removeObject(object : AnyObject) {
        for var index = self.indexOfObject(object); index != NSNotFound; index = self.indexOfObject(object) {
            self.removeAtIndex(index)
        }
    }
}


var a = [3, 3, 1, 2, 3, 3]
a.removeObject(3)
a

There is no need for casting, the following would be also ok

func indexOfObject(object : AnyObject) -> NSInteger {
    return self.indexOfObject(object)
}

what about to use filtering?

import Foundation
extension Array {
    mutating func removeObject<T where T : Equatable>(obj: T) {
        self = self.filter({$0 as? T != obj})
    }

}

@IronLeash I think a casting is necessary here. Omitting it will cause a endless loop.
In Swift 4 it should be something like this:

func indexOfObject(object : AnyObject) -> NSInteger { return (self as NSArray).index(of: object) }