Suneido Bind function

Bind

class
    {
    CallClass(@args)
        {
        ai = 0
        fi = 1
        mixed = args[1..].Map({ it is Bind ? 'a' $ ai++ : '.f' $ fi++ }).Join(',')
        c = (.binder)(mixed)
        return c(@args.Remove(Bind))
        }
    binder: Memoize
        {
        Func(mixed)
            {
            m = mixed.Split(',')
            fixed = '.f0,' $ m.Filter({ it.Prefix?('.f') }).Join(',')
            params = m.Filter({ it.Prefix?('a') }).Join(',')
            src = "class
                {
                New(' $ fixed $ ')
                    { }
                Call(' $ params $ ')
                    { return (.f0)(' $ mixed $ ') }
                }"
            return src.Compile()
            }
        }
    }