<entry index='h'>
<name>Hash</name>
<reference>associative array</reference>
<reference>dictionary</reference>
<reference>ruby</reference>
<content>
    Data structure in ((Ruby)) which expresses the mapping from key to value.
    It is also called "((Associative Array))" or "((Dictionary))."
    The derivation of hash is the algorithm
    which is called "Hash table" in the achievement of the structure.
    The word 'hash' means "cut in pieces", of "hashed beef."
</content>
</entry>
