Set the scheme

Synopsis

Declared in header <boost/url/url_base.hpp>

url_base&
set_scheme(core::string_view s);

Description

The scheme is set to the specified string, which must contain a valid scheme without any trailing colon (':'). Note that schemes are case-insensitive, and the canonical form is lowercased.

Example

assert( url( "http://www.example.com" ).set_scheme( "https" ).scheme_id() == scheme::https );

Complexity

Linear in this->size() + s.size().

Exception Safety

Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.

BNF

scheme        = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )

Specification

Exceptions

Name Thrown on

system_error

s contains an invalid scheme.

Parameters

Name Description

s

The scheme to set.

See Also

remove_scheme .