Ada Programming/Libraries/Ada.Strings.Unbounded.Hash Case Insensitive

is a unit of the Predefined Language Environment since Ada 2012.

Specification
AdaStringsUnboundedHash_Case_Insensitive Key Unbounded_String  ContainersHash_Type PreelaborateAdaStringsUnboundedHash_Case_Insensitive

Wikibook

 * Ada Programming/Libraries/Ada
 * Ada Programming/Libraries/Ada.Strings
 * Ada Programming/Libraries/Ada.Strings.Unbounded