note
ar0n
<blockquote>
<i>
He posted code that works,
</i>
</blockquote>
<p>
Err, actually, he didn't. See [dvergin]'s post.
</p>
<blockquote>
<i>
I don't see what's so bad about teaching him to do it
better (as opposed to at all). map and grep aren't
immediately intuitive unless you are already seeped in
lisp.
</i>
</blockquote>
<p>
That's why I told him to take a look at [map] and [grep]
(implying, "Read the documentation"). I am not 'seeped in
Lisp'. In fact, I have just started learning some Common
Lisp, yet I've been using [map] and [grep] in Perl for
quite some time now. I assume he's intelligent enough to
understand the definition of [grep]:
<pre>
grep - locate elements in a list test true against a given criterion
</pre>
And, using that definition, construct something like
<code>
my @matches = grep { ... } keys %friends
</code>
as he is apparently already able to retrieve hash keys.
</p>
</blockquote>
<blockquote>
<i>
Why not just tell him to put the conditional into a grep statement and it will spit out the right hashes?
</i>
</blockquote>
<p>
Because he can deduce that from reading the documentation on [grep]. One of Perl's great resources is its extensive documentation. Learning to read the documentation is a good thing, in my opinion.
</p>
<blockquote>
<i>
As an added bonus, less people will think that you are a grumpy loser.
</i>
</blockquote>
<p>
So I'm a grumpy loser now?
</p>
<p>
<small>[ <a href="/index.pl?node=ar0n&lastnode_id=1072">ar0n</a> -- want job (boston) ]</small>
</p>
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