SPDX-License-Identifier: GPL-2.0-or-later
NOTE! This copyright does *not* cover user models that use these Nasal
services by normal function calls - this is merely considered normal use
of the code, and does *not* fall under the heading of "derived work."
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hash.nas - simple hash class for development, allows to add callback on write
author: Henning Stahlke
created: 07/2020
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