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 the documentation for a snapshot of the master branch, built from commit 9fc5439165.
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value::is_number

Returns true if this is a number.

Synopsis
bool
is_number() const;
Description

This function returns true when kind() is one of the following values: kind::int64, kind::uint64, or kind::double_.

Complexity

Constant.

Exception Safety

No-throw guarantee.


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