Return a modifiable reference to the mapped value for key.
Declared in <bslstl_unorderedmap.h>
add_lvalue_reference<VALUE>::type
operator[](key_type const& key);Return a reference providing modifiable access to the mapped-value associated with the specified key in this unordered map; if this unordered map does not already contain a value_type object with key, first insert a new value_type object having key and a default-constructed VALUE object. Note that this method requires that the (template parameter) type KEY is copy-constructible and the (template parameter) VALUE is "default-constructible" (see {Requirements on value_type}).
modifiable reference to the mapped value
| Name | Description |
|---|---|
| key | key to look up |