def create_std_namespace(glb):
    """Create the std namespace and add the types we care about.
    (string and vector)

    Args:
        glb: ast.LibraryNode
    """
    std = glb.add_namespace("std", expose=False)
    std.add_typedef_by_name("string")
    std.add_typedef_by_name("vector")
    return std