Member variable Error():cargo Foundation
Instance variable for ad-hoc use.
This instance variable is not used by the Error object. Values of all data types can be assigned to it. The instance variable :cargo exists for compatibility reasons. It is used to attach additional information to the object for purposes required by the programmer. A better alternative is provided by the Xbase++ object model, which supports inheritance. Inheritance allows the programmer to define additional specific instance variables to customize objects as necessary.
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