add_course_exercise(NAME concepts MODULE 12_cpp20 STANDARD 20
    SOURCES src/concepts.cpp test/concepts_test.cpp)
add_course_exercise(NAME ranges MODULE 12_cpp20 STANDARD 20
    SOURCES src/ranges.cpp test/ranges_test.cpp)
add_course_exercise(NAME spaceship_operator MODULE 12_cpp20 STANDARD 20
    SOURCES src/spaceship_operator.cpp test/spaceship_operator_test.cpp)
add_course_exercise(NAME span MODULE 12_cpp20 STANDARD 20
    SOURCES src/span.cpp test/span_test.cpp)