Type Alias element_comparator

pub type element_comparator = Option<unsafe extern "C" fn(a: *const c_void, b: *const c_void) -> c_int>;

a comparator of elements.

A comparator of elements is a function that: -# receives two references to elements a and b -# returns {<0, 0, >0} if (a > b), (a == b), (a < b) respectively

It is responsibility of the function to handle possible NULL values.

Aliased Type

enum element_comparator {
    None,
    Some(unsafe extern "C" fn(_: *const c_void, _: *const c_void) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *const c_void, _: *const c_void) -> i32)

Some value of type T.