Computes a sum of elements in a sequence.

value A value of a TFF type that is either a sequence, or a federated sequence.

The sum of elements in the sequence. If the argument value is of a federated type, the result is also of a federated type, with the sum computed locally and independently at each location (see also a discussion on sequence_map and sequence_reduce).

TypeError If the arguments are of wrong or unsupported types.