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 1.90.0.

field::as_float (2 of 2 overloads)

field::as_float (2 of 2 overloads)

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

Synopsis

float&
as_float();

Exception safety

Strong guarantee. Throws on type mismatch.

Exceptions

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

Object lifetimes

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