Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Returns an iterator pointing to the first resultset that this object contains.
iterator begin() const;
this->has_value()
== true
No-throw guarantee.
The returned iterator and any reference obtained from it are valid as long
as *this
is alive. Move operations invalidate iterators.
Constant.