Type Alias xmlXPathVariableLookupFunc 

pub type xmlXPathVariableLookupFunc = Option<unsafe extern "C" fn(ctxt: *mut c_void, name: *const xmlChar, ns_uri: *const xmlChar) -> xmlXPathObjectPtr>;

Aliased Type

pub enum xmlXPathVariableLookupFunc {
    None,
    Some(unsafe extern "C" fn(*mut c_void, *const u8, *const u8) -> *mut _xmlXPathObject),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void, *const u8, *const u8) -> *mut _xmlXPathObject)

Some value of type T.