boost::urls::params_encoded_ref::set

Set a value

Synopsis

iterator
set(
    iterator pos,
    pct_string_view value);
iterator
set(
    pct_string_view key,
    pct_string_view value,
    ignore_case_param ic = = {});

Description

This function replaces the value of an element at the specified position.

All iterators that are equal to pos or come after are invalidated.

The string passed in must not come from the element being replaced, or else the behavior is undefined. 
url u( "?id=42&id=69" );

u.encoded_params().set( u.encoded_params().begin(), "none" );

assert( u.encoded_query() == "id=none&id=69" );

Linear in this->url().encoded_query().size().

Strong guarantee.

Calls to allocate may throw. Exceptions thrown on invalid input.

Exceptions

Name Thrown on

value

contains an invalid percent-encoding.

key

or value contain an invalid percent-encoding.

Return Value

An iterator to the element.

Parameters

Name Description

pos

An iterator to the element.

value

The value to assign. The empty string still counts as a value. That is, has_value for the element is true.

key

The key to match. By default, a case-sensitive comparison is used.

ic

An optional parameter. If the value ignore_case is passed here, the comparison is case-insensitive.