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From: Bart Schaefer <schaefer@brasslantern.com>
Date: Thu, 8 Sep 2016 13:00:18 -0700
Message-ID: <CAH+w=7ZZzfF8t0Fho1pvUCMzQJuHDoVS=S3Mox7gpx08YyNhJQ@mail.gmail.com>
Subject: Re: Fastest way to count # of files?
To: Zsh Users <zsh-users@zsh.org>
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On Thu, Sep 8, 2016 at 9:37 AM, Sebastian Gniazdowski
<sgniazdowski@gmail.com> wrote:
> First ran was slower than this and following ones:
>
> % typeset -F SECONDS; myst=$SECONDS; integer nfiles=0; :
> **/*(Ne?'((++nfiles)) && reply=()'?); print $nfiles; echo $(( (SECONDS
> - myst) * 1000 ))
> 80001
> 1427.3609999982
>
> I.e. 1.4 second

It may be using more time than your original example because of the
**/ recursion.

The only other option I can think of is this:

integer nfiles=0
typeset -a nlink
zmodload zsh/stat
: **/*(/Ne?'zstat -A nlink +nlink $REPLY && ((nfiles += $nlink - 2));
reply=()'?)
print $nfiles

This assumes that nlink for a directory is the number of files it
contains plus "." and "..".  However, the result I get is off by a
little from the glob without directory filtering.