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 127294d48b.

Returns the value for a field, or "" if it does not exist.

string_view const
operator[](
    field name) const;
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Returns the value for a case-insensitive matching header, or "" if it does not exist.

string_view const
operator[](
    string_view name) const;
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