[OFF TOPIC] Algorithms (was: Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs.)

[2QdxY4RzWzUUiLuE]

On 2021-08-13 at 12:11:29 +0200,
Emanuel Berg via Users list for the GNU Emacs text editor 
<help-gnu-emacs@gnu.org> wrote:

> #! /bin/zsh
> longest-line () {
>     local f=$1
>     awk '{ print length($0) " " $0; }' $f | sort -n | tail -1

Don't sort unless you have to.

Don't send all that data through two pipes.

    awk '{if(length($0) > length(x)) {x = $0} END {print x}'

For small files, you won't notice the difference.  For large files, you
will.  Definitions of "small" and "large" depend on a lot of things.

> }