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 develop branch, built from commit 2daa88693b.

object::try_at (2 of 2 overloads)

Access the specified element, with bounds checking.

Synopsis

boost::system::result< value const & >
try_at(
    string_view key) const noexcept;

Description

Returns boost::system::result containing a reference to the mapped value of the element that matches key. Otherwise the result contains an error_code.

Exception Safety

No-throw guarantee.

Parameters

Name	Description
`key`	The key of the element to find.

Complexity

Constant on average, worst case linear in size().