User Procedure Control Structures

QCL Commands for controlling the execution within User Procedures:

• User Procedure Control Structure Commands

• Abort execution of a User Procedure

• Pause execution of a User Procedure

• Resume execution of a User Procedure, when timer expires

• Go To statement label within User Procedure

• Conditional execution - Execute Command String IF expression is True

• Conditional list management - Add vector name to a list IF expression is True

• Conditional list management - Add vector name to a "YES-list" IF expression is True, otherwise add the vector name to a "NO-list" 

• Repeat the execution of a pair of User Procedures, while walking the calendar dates. This is designed to allow training of parameters, walking the calendar forward, and executing an operations procedure, using those recently trained parameters. The purpose is to allow a model to be walked over non-stationary markets.

 

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