https://www.yourdictionary.com/unary-operator
Unary-operator Definition & Meaning | YourDictionary
unary operatordefinitionmeaningyourdictionary
https://www.boost.org/doc/libs/1_87_0/doc/html/doxygen/headers/user__macros_8hpp_1aa9983b01946946553fe90322028540b7.html
Macro BOOST_YAP_USER_UDT_UNARY_OPERATOR
macroboostyapuserudt
https://www.boost.org/doc/libs/master/doc/html/doxygen/headers/user__macros_8hpp_1aa9983b01946946553fe90322028540b7.html
Macro BOOST_YAP_USER_UDT_UNARY_OPERATOR
macroboostyapuserudt
https://www.ibm.com/docs/en/db2/11.5.x?topic=queries-connect-by-root
CONNECT_BY_ROOT unary operator
The CONNECT_BY_ROOT unary operator is for use only in hierarchical queries. For every row in the hierarchy, this operator returns the expression for the root...
connect by rootunaryoperator
https://www.boost.org/doc/libs/master/doc/html/doxygen/headers/user__macros_8hpp_1a835bf2c8a57e5572849469d6f3acb0cf.html
Macro BOOST_YAP_USER_UNARY_OPERATOR
macroboostyapuserunary