Function haystack_value_get_dict_len 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn haystack_value_get_dict_len(
    val: *const Value,
) -> usize

Get number of elements of a Dict Value

Arguments

val A Dict Value

Returns

• number of elements
• -1 if there was an error getting the length, in which case the last_error_message can be called to get the error message.

Example

let val = haystack_value_make_dict();
assert!(haystack_value_is_dict(val));
assert_eq!(haystack_value_get_dict_len(val), 0);

Safety

Panics on invalid input data