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 20a7dc9240.
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string::at (2 of 2 overloads)

Return a character with bounds checking.

Synopsis
char const&
at(
    std::size_t pos) const;
Description

Returns a reference to the character specified at location pos.

Complexity

Constant.

Exception Safety

Strong guarantee.

Parameters

Name

Description

pos

A zero-based index to access.

Exceptions

Type

Thrown On

std::out_of_range

pos >= size()


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