Function each_is_number 

pub fn each_is_number() -> JsonPredicateMatcher<impl Fn(&Value) -> bool, String, &'static str>

Matches JSON arrays whose elements are all JSON numbers.

Examples

assert_that!(j!([1, 2, 3]), json::each_is_number());
assert_that!(j!([1, "b"]), not(json::each_is_number()));