[Haskell-cafe] How to make interface IO() to IO a in a command-driven tool

2008-11-18 Thread Kyongho Min
Dear Haskell users, I am working on a command-driven tool (::IO ()). If the system invokes itself again, and the system's returned data type would be 'IO a', say (IO Exp) (Expression). tool:: a - IO() The nested tool invocation returns (IO Exp) to the previous tool. I am using dynamic error

[Haskell-cafe] How to make interface IO() to IO a in a command-driven tool

2008-11-17 Thread Kyongho Min
Dear Haskell users, I am working on a command-driven tool (::IO ()). If the system invokes itself again, and the system's returned data type would be 'IO a', say (IO Exp) (Expression). tool:: a - IO() The nested tool invocation returns (IO Exp) to the previous tool. I am using dynamic error