basic_json::get<T>() of a boolean throws type_error.302 for exactly number_integer_t, number_unsigned_t and number_float_t (dedicated from_json() overloads) and gives 0/1 for every other arithmetic type. The view returned 0/1 for all of them, contradicting its documentation. The view now throws the same exception (same message, with path/bytes decoration) for these three types. basic_json is unchanged; its behavior is documented and pinned by a test. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
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