[#boost-urls-params_ref-append-0f] = xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/params_ref.adoc[params_ref]::append :relfileprefix: ../../../ :mrdocs: Append elements == Synopsis Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/params_ref.hpp#L380[boost/url/params_ref.hpp]>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- xref:boost/urls/params_base/iterator.adoc[iterator] append(xref:boost/urls/param_view.adoc[param_view] const& p); ---- == Description This function appends a param to the view. The `end()` iterator is invalidated. === Example [,cpp] ---- url u; u.params().append( { "first", "John" } ); ---- === Complexity Linear in `this‐>url().encoded_query().size()`. === Exception Safety Strong guarantee. Calls to allocate may throw. == Return Value An iterator to the new element. == Parameters |=== | Name | Description | *p* | The param to append. |=== [.small]#Created with https://www.mrdocs.com[MrDocs]#