// bool TryGetValue(TKey key, out TValue value)
internal bool TryGetValue <K, V>(K key, out V value)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
IMapView <K, V> _this = JitHelpers.UnsafeCast <IMapView <K, V> >(this);
// It may be faster to call HasKey then Lookup. On failure, we would otherwise
// throw an exception from Lookup.
if (!_this.HasKey(key))
{
value = default(V);
return(false);
}
try
{
value = _this.Lookup(key);
return(true);
}
catch (Exception ex) // Still may hit this case due to a race condition
{
if (__HResults.E_BOUNDS == ex._HResult)
{
value = default(V);
return(false);
}
throw;
}
}
internal bool TryGetValue <K, V>(K key, out V value)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
IMapView <K, V> mapView = JitHelpers.UnsafeCast <IMapView <K, V> >(this);
if (!mapView.HasKey(key))
{
value = default(V);
return(false);
}
bool result;
try
{
value = mapView.Lookup(key);
result = true;
}
catch (Exception ex)
{
if (-2147483637 != ex._HResult)
{
throw;
}
value = default(V);
result = false;
}
return(result);
}
internal bool ContainsKey <K, V>(K key)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
IMapView <K, V> mapView = JitHelpers.UnsafeCast <IMapView <K, V> >(this);
return(mapView.HasKey(key));
}
internal bool ContainsKey <K, V>(K key)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
IMapView <K, V> _this = Unsafe.As <IMapView <K, V> >(this);
return(_this.HasKey(key));
}
internal bool TryGetValue <K, V>(K key, out V value)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
IMapView <K, V> _this = Unsafe.As <IMapView <K, V> >(this);
// It may be faster to call HasKey then Lookup. On failure, we would otherwise
// throw an exception from Lookup.
if (!_this.HasKey(key))
{
value = default !; // TODO-NULLABLE-GENERIC
// bool TryGetValue(TKey key, out TValue value)
internal bool TryGetValue <K, V>(K key, [MaybeNullWhen(false)] out V value) where K : notnull
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
IMapView <K, V> _this = Unsafe.As <IMapView <K, V> >(this);
// It may be faster to call HasKey then Lookup. On failure, we would otherwise
// throw an exception from Lookup.
if (!_this.HasKey(key))
{
value = default !;