Iff and Some operators for #SwiftUI. Inspired on some stuff we use in [Bento](). It lets you chain modifiers instead of doing "if - else" dance 🚀

Iff.swift

extension View {
    func iff(_ condition: Bool, _ modifier: (Self) -> AnyView) -> AnyView {
        if condition {
            return modifier(self).eraseToAnyView()
        }
        return eraseToAnyView()
    }
    
    func some<Value>(_ optional: Value?, modifier: (Value, Self) -> AnyView) -> some View {
        guard let value = optional else {
            return self.eraseToAnyView()
        }
        
        return modifier(value, self).eraseToAnyView()
    }
}

// Now we can do this

ForEach(context.movies.identified(by: \.id)) { movie -> AnyView in
    MovieCell(movie: movie)
        .iff(context.movies.last == movie) { (cell) -> AnyView in
            return cell.onAppear {
                context.send(event: .fetchNext)
            }
        }
}

// Instead of this 

ForEach(context.movies.identified(by: \.id)) { movie -> AnyView in
    if context.movies.last == movie {
        return MovieCell(movie: movie)
            .onAppear {
                // Fetch next batch every time reach to the end of the list
                context.send(event: .fetchNext)
            }
            .eraseToAnyView()
    }
    return MovieCell(movie: movie)
        .eraseToAnyView()
}