[mercury-users] Newbie questions about typeclasses

[Critterrathman at aol.com]

>>It is generally not
>>necessary to give mode declarations for _functions_ since, if no mode
>>declaration is given, a default mode is assumed where every argument
>>has mode 'in', the result has mode 'out' and the determinism is 'det'.

As a neophyte writing code, being explicit with the modes kind of helped me 
see the consitency between functions and predicates.  I went ahead and 
stripped them out of the example on the web page, which does help shorten the 
code up and improve readability a tad.

Thanks.
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