Boost C++ Libraries

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array::at (3 of 3 overloads)

Access an element, with bounds checking.

Synopsis
value const&
at(
    std::size_t pos,
    boost::source_location const& loc = BOOST_CURRENT_LOCATION) const&;
Description

Returns a reference to the element specified at location pos, with bounds checking. If pos is not within the range of the container, an exception of type boost::system::system_error is thrown.

Complexity

Constant.

Parameters

Name

Description

pos

A zero-based index.

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

pos >= size().


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