// // Copyright (c) 2006, Brian Frank and Andy Frank // Licensed under the Academic Free License version 3.0 // // History: // 7 Apr 06 Brian Frank Creation // ** ** ReadonlyErr indicates an attempt to modify a readonly instance; ** it is commonly used with List and Map. ** const class ReadonlyErr : Err { ** ** Construct with specified error message and optional root cause. ** new make(Str msg := "", Err? cause := null) }