Function ecs_map_params_init 

pub unsafe extern "C" fn ecs_map_params_init(
    params: *mut ecs_map_params_t,
    allocator: *mut ecs_allocator_t,
)

Function/macro postfixes meaning: _ptr: access ecs_map_val_t as void* _ref: access ecs_map_val_t* as T** _deref: dereferences a _ref _alloc: if _ptr is NULL, alloc _free: if _ptr is not NULL, free