value::as_int64

Return a reference to the underlying string, or throw an exception.

Synopsis

std::int64_t&
as_int64(
    boost::source_location const& loc = BOOST_CURRENT_LOCATION); (1)

std::int64_t
as_int64(
    boost::source_location const& loc = BOOST_CURRENT_LOCATION) const; (2)

Description

If is_string() is true, returns a reference to the underlying string, otherwise throws an exception.

Exception Safety

Strong guarantee.

Parameters

Name Description

loc

source_location to use in thrown exception; the source location of the call site by default.

Exceptions

Type Thrown On

boost::system::system_error

! this->is_string().

Complexity

Constant.

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