Set the query params

Synopsis

Declared in header </boost/url/url_base.hpp#L2243[boost/url/url_base.hpp,window=blank_]>

url_base&
set_params(initializer_list<param_view> ps) noexcept;

Description

This sets the query params to the list of param_view, which can be empty. An empty list of params is distinct from having no params. Reserved characters in the string are percent-escaped in the result.

Example

assert( url( "http://example.com" ).set_params( {"id", "42"} ).query() == "id=42" );

Postconditions

this->has_query() == true

Exception Safety

Strong guarantee. Calls to allocate may throw.

Complexity

Linear.

BNF

query           = *( pchar / "/" / "?" )

query-param     = key [ "=" value ]
query-params    = [ query-param ] *( "&" query-param )

Specification

  • ://en.wikipedia.org/wiki/Query_string" >Query string (Wikipedia)

Return Value

  • ``

Parameters

Name Type

ps

initializer_list