Path: csiph.com!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups: comp.lang.javascript
Subject: Re: Functional Programming needs some real world use cases
Date: Thu, 19 Jan 2017 20:10:18 +0000
Organization: A noiseless patient Spider
Lines: 21
Message-ID: <87bmv2erpx.fsf@bsb.me.uk>
References: <8b2dc802-a0d2-4ae0-ba75-98ecf5989e64@googlegroups.com>
Mime-Version: 1.0
Content-Type: text/plain
Injection-Info: mx02.eternal-september.org; posting-host="2cdf34f8ad320d53510d792e611eaef0"; logging-data="28291"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1/EBKuEo6ttYbuxfB50P+veXvmN5LfGXRY="
Cancel-Lock: sha1:A3txNaFWYqgujYaT16tiozOa+Uk= sha1:9otCt3j5vzH4O6GbeOM0+mvCxv0=
X-BSB-Auth: 1.ece75958d781bcac23d7.20170119201018GMT.87bmv2erpx.fsf@bsb.me.uk
Xref: csiph.com comp.lang.javascript:32198

justaguy <lichunshen84@gmail.com> writes:

> I'm starting to read about Functional Programming.  The following is
> some sample code, which seems concise.  In the meantime, I wonder if
> you have some idea of using other "action" other than "print", and of
> course, feel free to use other array "values" where appropriate.
>
> function forEach(array, action) {
>   for (var i = 0; i < array.length; i++)
>     action(array[i]);
> }
>
> forEach(["Wampeter", "Foma", "Granfalloon"], print);

As an exercise, what expression can you write in place of "..." to print
all seven strings (and just those):

  forEach([["a","b","c"],["q","r"],["z"]], ...);

-- 
Ben.