IMap<K, V> interface

Represents an associative collection.

Template parameters

• K
  The type of the keys in the map.

• V
  The type of the values in the map.

Members

The IMap<K, V> interface inherits from IInspectable. IMap also has these types of members:

• Methods

Methods

The IMap<K, V> interface has these methods.

Remarks

The IMap interface represents a collection of key-value pairs in which a value can be accessed by its associated key. Properties and methods of IMap support dictionary-type functionality such getting the size of the collection and adding and removing items at specified locations in the collection. Additionally, the GetView method provides a snapshot of the map whose observable state does not change. The snapshot is useful when you need a view of the collection to refer to in subsequent operations that involve the IMap.

Examples

The following code example demonstrates how to use the IMap object and get a view of the map.

comptr<IMap<HSTRING,IValue>> pMap;
HSTRING hKey;
//...

comptr<IMapView<HSTRING,IValue>> pMapView;
HRESULT hr = pMap->GetView(&pMapView);
if (SUCCEEDED(hr))
{
    bool bHasKey
    hr = pMapView->HasKey(hKey, &bHasKey);
    if (SUCCEEDED(hr) && bHasKey)
    {
        comptr<IValue> pValue;
        hr = pMapView->Lookup(hKey, &pValue);
        if (SUCCEEDED(hr))
        {
            //...
        }
    }
}

Requirements

See also

IMapView