Type Alias crfsuite_logging_callback 

pub type crfsuite_logging_callback = Option<unsafe extern "C" fn(user: *mut c_void, format: *const c_char, args: *mut __va_list_tag) -> c_int>;

Type of callback function for logging.

• user Pointer to the user-defined data.
• format Format string (compatible with prinf()).
• args Optional arguments for the format string.

Returns int \c 0 to continue; non-zero to cancel the training.

Aliased Type

pub enum crfsuite_logging_callback {
    None,
    Some(unsafe extern "C" fn(*mut c_void, *const i8, *mut __va_list_tag) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void, *const i8, *mut __va_list_tag) -> i32)

Some value of type T.