[JaxPM] computing values vs. storing as hash

[Greg Sabino Mullane]

On the jacksonville-pm-list; Jax.PM'er "Greg Sabino Mullane" <greg at turnstep.com> wrote -


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> I was wondering (more academically than anything else), 
> whether I should store the mapping of priority values to 
> facility/severity strings as hash or compute them on the fly.

In general, it is always better to use a hash. Hash lookups 
tend to be extremely fast compared to almost any other 
operation you perform, unless the operation is extremely 
simple and the hash extremely long. In this particular case, 
I'd use a hash. Matter of fact, I've never run up against a 
case where a computation was preferred over a hash.

</2 cents>

Greg Sabino Mullane
greg at turnstep.com
PGP Key: 0x14964AC8 200201030741

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