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url_view_base::empty

Return true if the url is empty.

Synopsis
bool
empty() const;
Description

The empty string matches the relative-ref grammar.

Example
assert( [link url.ref.boost__urls__url_view_base.url_view `url_view`]( "" ).[link url.ref.boost__urls__url_view_base.empty `empty`]() );
Complexity

Constant.

Exception Safety

Throws nothing.

BNF
relative-[link url.ref.boost__urls__grammar__ref `ref`]  = relative-part [ "?" [link url.ref.boost__urls__url_view_base.query `query`] ] [ "#" [link url.ref.boost__urls__url_view_base.fragment `fragment`] ]

relative-part = "//" [link url.ref.boost__urls__url_view_base.authority `authority`] [link url.ref.boost__urls__url_view_base.path `path`]-abempty
              / [link url.ref.boost__urls__url_view_base.path `path`]-absolute
              / [link url.ref.boost__urls__url_view_base.path `path`]-noscheme
              / [link url.ref.boost__urls__url_view_base.path `path`]-[link url.ref.boost__urls__url_view_base.empty `empty`]
Specification

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