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value::as_string (1 of 2 overloads)

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

Synopsis
string&
as_string();
Description

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

Complexity

Constant.

Exception Safety

Strong guarantee.

Exceptions

Type

Thrown On

std::invalid_argument

! this->is_string()


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