boost::urls::url_view_base::scheme

Return the scheme

Synopsis

Declared in <include/boost/url/url_view_base.hpp>

core::string_view
scheme() const noexcept;

Description

This function returns the scheme if it exists, without a trailing colon (':'). Otherwise it returns an empty string. Note that schemes are case-insensitive, and the canonical form is lowercased.

assert( url_view( "http://www.example.com" ).scheme() == "http" );

Throws nothing.

scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ] absolute-URI = scheme ":" hier-part [ "?" query ]
  • 3.1. Scheme (rfc3986)

    • See Also

    has_scheme , scheme_id .

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