boost::urls::url_view_base::params :: Boost Libraries Documentation

# boost::urls::url_view_base::params

Return the query as a container of parameters

## Synopsis

Declared in `<boost/url/url_view_base.hpp>`

    params_view
    params() const noexcept;

## Description

This function returns a bidirectional view of key/value pairs over the query. The returned view references the same underlying character buffer; ownership is not transferred. Any percent‐escapes in strings returned when iterating the view are decoded first.

## Example

    params_view pv = url_view( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).params();

## Complexity

Constant.

## Exception Safety

Throws nothing.

## BNF

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

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

## Specification

- https://datatracker.ietf.org/doc/html/rfc3986#section-3.4

- https://en.wikipedia.org/wiki/Query_string

## Return Value

A bidirectional view of key/value pairs.

## See Also

`encoded_params`, `encoded_query`, `has_query`, `query`.

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