4.39. 4.39 Union Constants
Like records, HLA allows you to create union constants within your HLA source files. However, because all the fields of a union occupy the same storage at runtime, union constants only let you specify a single value. The question is, "which value?" Well, when you create a union constant, you have to explicitly specify the field whose value you want provide. You do this using the following syntax:
typename.fieldname:[ field_value ]
The typename item must be a union type you've previously defined in a type section. The fieldname item must be a valid field from that union type. The field_value item must be an appropriate constant whose type matches the typename.fieldname field. Here is a quick example:
type utype: union b:byte; ...
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