Boost C++ Libraries Home Libraries People FAQ More

PrevUpHomeNext
url::has_query

Return true if a query is present.

Synopsis
bool
has_query() const;
Description

This function returns true if this contains a query. An empty query is distinct from having no query.

Example
assert( [link url.ref.boost__urls__url_view_base.url_view `url_view`]( "/sql?id=42&col=name&page-size=20" ).[link url.ref.boost__urls__url.has_query `has_query`]() );
Complexity

Constant.

Exception Safety

Throws nothing.

BNF
[link url.ref.boost__urls__url.query `query`]           = *( pchar / "/" / "?" )

[link url.ref.boost__urls__url.query `query`]-param     = key [ "=" value ]
[link url.ref.boost__urls__url.query `query`]-[link url.ref.boost__urls__url_view.params `params`]    = [ [link url.ref.boost__urls__url.query `query`]-param ] *( "&" [link url.ref.boost__urls__url.query `query`]-param )
Specification
See Also

encoded_params, encoded_query, params, query.


PrevUpHomeNext