A possible opportunity for optimization in ImmutableArrayExtensions.GetTypesFromMemberMap

[AlekseyTs]

roslyn/src/Compilers/Core/Portable/Collections/ImmutableArrayExtensions.cs

Lines 971 to 995 in 7c23c2e

	bool hasType = false;
	bool hasNamespace = false;
	foreach (var symbol in members)
	{
	if (symbol is TNamedTypeSymbol)
	{
	hasType = true;
	if (hasNamespace)
	{
	break;
	}
	}
	else
	{
	#if DEBUG
	Debug.Assert(symbol is TNamespaceSymbol);
	#endif
	hasNamespace = true;
	if (hasType)
	{
	break;
	}
	}
	}

It looks like members.As<TNamedTypeSymbol>() can be used to quickly detect a situation when hasType is true && hasNamespace is false

[jcouv]

Assigned to @CyrusNajmabadi since he already has a fix in the works.