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static_url::scheme_id

(Inherited from url_view_base)

Return the scheme.

Synopsis
urls::scheme
scheme_id() const;
Description

This function returns a value which depends on the scheme in the url:

Example
assert( [link url.ref.boost__urls__url_view_base.url_view `url_view`]( "wss://www.example.com/crypto.cgi" ).[link url.ref.boost__urls__static_url.scheme_id `scheme_id`]() == [link url.ref.boost__urls__scheme `scheme::wss`] );
Complexity

Constant.

Exception Safety

Throws nothing.

BNF
URI             = [link url.ref.boost__urls__static_url.scheme `scheme`] ":" hier-part [ "?" [link url.ref.boost__urls__static_url.query `query`] ] [ "#" [link url.ref.boost__urls__static_url.fragment `fragment`] ]

absolute-URI    = [link url.ref.boost__urls__static_url.scheme `scheme`] ":" hier-part [ "?" [link url.ref.boost__urls__static_url.query `query`] ]

[link url.ref.boost__urls__static_url.scheme `scheme`]          = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
Specification
See Also

has_scheme, scheme.


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