Erlang データタイプ Tuple

2.9  Tuple
(タプル)

Compound data type with a fixed number of terms:
(？)

{Term1,...,TermN}
Each term Term in the tuple is called an element.
(tuple内の各Termはエレメントと呼ばれる)

The number of elements is said to be the size of the tuple.
（エレメントの数はtupleのサイズである。）

There exists a number of BIFs to manipulate tuples.
（tupleを操るBIFsは多く存在する。）

Examples:

1> P = {adam,24,{july,29}}.
{adam,24,{july,29}}
2> element(1,P).
adam
3> element(3,P).
{july,29}
4> P2 = setelement(2,P,25).
{adam,25,{july,29}}
5> tuple_size(P).
3
6> tuple_size({}).
0