Function libhaystack::c_api::value::haystack_value_is_marker

#[no_mangle]
pub unsafe extern "C" fn haystack_value_is_marker(
    val: *const Value
) -> bool

True if a Marker Value

Arguments

val a Value.

Returns

True, or False in which case if argument type mismatch an error is created that can be read using last_error_message

Example

let val = haystack_value_make_marker();
assert!(haystack_value_is_marker(val))

Safety

Panics on invalid input data