According to https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/p2996r10.html#syntax-discussion https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/p

According to https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/p2996r10.html#syntax-discussion https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/p29... > The original TS landed on reflexpr(...) as the syntax to reflect source constructs and [P1240R0] adopted that syntax as well. As more examples were discussed, it became clear that that syntax was both (a) too “heavy” and (b) insufficiently distinct from a function call. SG7 eventually agreed upon the prefix ^ operator. The “upward arrow” interpretation of the caret matches the “lift” or “raise” verbs that are sometimes used to describe the reflection operation in other contexts.