Function clingo_sys::clingo_configuration_map_has_subkey [−] [src]

pub unsafe extern "C" fn clingo_configuration_map_has_subkey(
    configuration: *const clingo_configuration_t, 
    key: clingo_id_t, 
    name: *const c_char, 
    result: *mut bool
) -> bool

Query whether the map has a key.

@pre The @link clingo_configuration_type() type@endlink of the entry must be @ref ::clingo_configuration_type_map.

Note: Multiple levels can be looked up by concatenating keys with a period.

Parameters:

  • configuration - the target configuration
  • key - the key
  • name - the name to lookup the subkey
  • result - whether the key is in the map

Returns whether the call was successful