:relfileprefix: ../../../ [#CB5238F67EF17400CD6B299D48F0ECDB4254C95D] = Function params_encoded_view::params_encoded_view pass:v,q[Constructor] == Synopsis Declared in header `` [source,cpp,subs="verbatim,macros,-callouts"] ---- params_encoded_view(string_view s); ---- == Description pass:v,q[This function constructs params from] pass:v,q[a valid query parameter string, which] pass:v,q[can contain percent escapes. Unlike] pass:v,q[the parameters in URLs, the string] pass:v,q[passed here should not start with "?".] pass:v,q[Upon construction, the view] pass:v,q[references the character buffer pointed] pass:v,q[to by `s`. The caller is responsible] pass:v,q[for ensuring that the lifetime of the] pass:v,q[buffer extends until it is no longer] pass:v,q[referenced.] === Example [,cpp] ---- params_encoded_view qp( "first=John&last=Doe" ); ---- === Effects [,cpp] ---- return parse_query( s ).value(); ---- === Postconditions [,cpp] ---- this->buffer().data() == s.data() ---- === Complexity pass:v,q[Linear in `s`.] === Exception Safety pass:v,q[Exceptions thrown on invalid input.] === BNF [,cpp] ---- query-params = [ query-param ] *( "&" query-param ) query-param = key [ "=" value ] ---- === Specification * link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.4[3.4. Query] == Return Value * `void` == Parameters |=== | Name | Type | *s* | `string_view` |===