natecook1000

import Foundation

extension UnicodeScalar : ForwardIndexType {
    public func successor() -> UnicodeScalar {
        return UnicodeScalar(value + 1)
    }
}

var operatorHeads: [UnicodeScalar] = Array("=-+!*%<>&|^~?".unicodeScalars)
operatorHeads += Array("\u{00A1}" ... "\u{00A7}")