array-remove.swift

extension Array {    
    public mutating func remove(where: (Element) -> Bool) {
        while let index = self.index(where: `where`) {
            remove(at: index)
        }
    }
    
    public func removed(where: (Element) -> Bool) -> [Element] {
        var copy = self
        copy.remove(where: `where`)
        return copy
    }
}