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Date: 2004-04-26 (19:17)
From: Jon Harrop <jdh30@c...>
Subject: Re: [Caml-list] help
On Sunday 25 April 2004 1:45 pm, Henri DF wrote:
> > I deliberately made "wnum" a reference so that it can be set:
> any reason not to make it a mutable ?

No good reason. ;)

I've just been looking at the assembler output from ocamlopt on this. I think 
that a mutable record field represents one fewer levels of indirection 
compared to a reference record field. On a contrived example, using mutable 
is twice as fast.

Comparing a mutable record field to a reference (not in a record), the latter 
comes out as slightly quicker in my timings. But I think this is 
insignificant as the assembler output seems to be identical.


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