immutable class ENUM_TEST < $ENUM_SET{ENUM_TEST,TRI_STATE} |
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$ENUM_SET{_,_} | $IS_LT{_} | $IS_EQ | $ENUM_SET | $IMMUTABLE | $STR | $BINARY |
const definite : SAME := empty + TRI_STATE::Yes + TRI_STATE::No ; |
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const unknown : SAME := empty + TRI_STATE::Unknown ; |
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