No subject
Wed Sep 3 04:45:31 EDT 2008
need not to have extra constraints placed on it.
Cheers
leppie
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<DIV>What is the rationale for making the hash value non-negative?=20
</DIV></BLOCKQUOTE>
<DIV>From the various answers/discussions below I can only deduce that =
there is=20
none.</DIV>
<DIV><FONT size=3D2 face=3DArial></FONT> </DIV>
<DIV><FONT size=3D2 face=3DArial>From a performance point of view, one =
should=20
preferably only return values within the fixnum range.</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT> </DIV>
<DIV><FONT size=3D2 face=3DArial>From an acceptance point of view, the =
hashtable=20
implementation should expect any exact integer as the return =
value for=20
the provided hash function.</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT><FONT size=3D2 =
face=3DArial></FONT> </DIV>
<DIV><FONT size=3D2 face=3DArial>From yet another view, one's hash =
function should=20
be really fast, and need not to have extra constraints placed on=20
it.</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT> </DIV>
<DIV><FONT size=3D2 face=3DArial>Cheers</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial></FONT> </DIV>
<DIV><FONT size=3D2 face=3DArial>leppie</FONT></DIV>
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