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

This is an older version of Boost and was released in 2024. The current version is 1.89.0.

field::as_double (1 of 2 overloads)

field::as_double (1 of 2 overloads)

Retrieves a reference to the underlying double value or throws an exception.

Synopsis

const double&
as_double() const;

Exception safety

Strong guarantee. Throws on type mismatch.

Exceptions

Type	Thrown On
`bad_field_access`	If `!this->is_double()`

Object lifetimes

The returned reference is valid as long as *this is alive and no function that invalidates references is called on *this.