set

Set a value

Synopsis


                iterator
set(
    pct_string_view key,
    pct_string_view value,
    ignore_case_param ic);

Declared in file <src/params_encoded_ref.cpp> at line 197

Description

This function performs one of two actions depending on the value of `this->contains( key, ic )`.

If key is contained in the view then one of the matching params has its value changed to the specified value. The remaining params with a matching key are erased. Otherwise,

If `key` is not contained in the view, then the function apppends the param `{ key, value }`.

All iterators are invalidated.

NOTE

The strings passed in must not come from the element being replaced, or else the behavior is undefined.

Example


url u( "?id=42&id=69" );

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

assert( u.encoded_params().count( "id" ) == 1 );

Postconditions


this->count( key, ic ) == 1 && this->find( key, ic )->value == value

Complexity

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

Exception Safety

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