====== std ======

**//Inherited from//**  [[class::pair|pair]],[[class::t|T]],[[class::u|U]],

**//Inherited by//**  NULL

**//Friend class//**  NULL

**//Description//**

**//Public interface//**
  * size_t [[std#operator|operator]]()(pair<T, U> x) const throw()

----

{{anchor:operator}}
**size_t operator()(pair<T, U> x) const throw()**
  *function: 
  *parameters: NULL
  *return value: