Sean,
The case you listed is where let binding becomes important so as to not
perform duplicate evaluation. That is one place the utility of let stands
out along with its scope.
For example
Without let bindings:
(if (p (some-expression))
(f (some-expression))
(g (some-expression))
introduces duplicate evaluation. I see the utility of let more in such
scenarios. Whereas in the original PGs example that is not the case, and
debate on that stands.
On Tue, Oct 15, 2013 at 10:02 AM, Sean Corfield <seancorfi...@gmail.com>wrote:
> Yeah, I found when I first got started with Clojure I tended to use
> let for intermediate named results but over time I've moved to using
> small, private top-level functions instead because I want to focus on
> the names of the _functionality_ rather than the names of intermediate
> _data_. I still use let for some things but nowhere near as much as I
> used to.
>
> One construct using let that I see in my code quite a bit that I
> haven't figured out a cleaner way to express:
>
> (let [x (some-expression)]
> (if (p x)
> (f x)
> (g x)))
>
> I get tempted to write a utility function for it but I haven't come up
> with a good name for it :)
>
> Sean
>
> On Tue, Oct 15, 2013 at 9:00 AM, Alex Baranosky
> <alexander.barano...@gmail.com> wrote:
> > I and some of my coworkers do tend to avoid `let` unless in this
> particular
> > case you especially want to emphasize the name of something unobvious.
> OFten
> > I'd prefer to pull out a new function over using let, or inline the
> binding
> > for readability *improvement*.
> >
> >
> > On Tue, Oct 15, 2013 at 8:18 AM, Raoul Duke <rao...@gmail.com> wrote:
> >>
> >> if a programming language doesn't have something like 'where', then i
> >> am sad. http://stackoverflow.com/questions/4362328/haskell-where-vs-let
> >>
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> Sean A Corfield -- (904) 302-SEAN
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