Copying tuples

Here are some performance considerations when you copy tuples that are of the same or different types.

Copying tuples of same type

tuple1.assign(tuple2); // efficient

Copying tuples of different types

  • An example of a reflexive method to copy
    tuple.assignFrom(tuple2, false); // inefficient
  • A better method is to use explicit attribute copies
    tuple.get_attr1() = tuple2.get_attr1();
tuple.get_attr2() = tuple2.get_attr2();
...                 // explicit attribute copies
  • The best example is to use swap when you copy large attributes
    tuple.get_attr1() = tuple2.get_attr1();
tuple.get_myList().swap(tuple2.get_myList());