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>> raku -e'lines() ==> grep(/^WARN/) ==> sort() ==> join("\n") ==> say()' sample.log
> raku -e'lines() ==> grep(/^WARN/) ==> sort() ==> reduce({$^a ~ "\n" ~ $^b}) ==> say()' sample.log
So what does reduce() do differently than join() here? I was thinking weeding out duplicates but it seems not.
________________________________
From: Fernando Santagata <nando.santagata@gmail.com>
Sent: Friday, May 8, 2020 2:16 PM
To: yary <not.com@gmail.com>
Cc: William Michels <wjm1@caa.columbia.edu>; WFB <wolfgang.banaston@gmail.com>; perl6-users <perl6-users@perl.org>
Subject: Re: Raku -npe command line usage
On Fri, May 8, 2020 at 6:10 PM Fernando Santagata <nando.santagata@gmail.com<mailto:nando.santagata@gmail.com>> wrote:
raku -e'lines() ==> grep(/^WARN/) ==> sort() ==> reduce({$^a ~ "\n" ~ $^b}) ==> say()' sample.log
and the reduce call can be written more compactly: reduce({"$^a\n$^b"})
--
Fernando Santagata
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