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Re^3: How to count no of words in a text input file? (Why homework?)

by erroneousBollock (Curate)
on Nov 29, 2007 at 03:03 UTC ( #653755=note: print w/replies, xml ) Need Help??

in reply to Re^2: How to count no of words in a text input file?
in thread How to count no of words in a text input file?

This is not a demand of service question and not part of any homework assignment or work related question. I just happen to read some sample Qs in a text book and found this particular question very interesting.
As I mentioned in Re: Least common ancestor function implemented in perl (Homework) it is homework, no matter the "teacher" (which could be yourself). Please read what I wrote there about annotation.

But since i'm pretty new to perl, i couldnt do it myself hence posted here.
If you can't even begin to solve the problem in Perl (or any other language) in order to show us what you've done, then you need to start with much smaller problems.


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[Eily]: you could tie a variable into not having the same value each time, if you like to make people who try to debug your code facepalm
[Corion]: perl -wle 'package o; use overload q("") => sub {warn "str"; ""}, bool => sub{warn "bool"; 1}; package main; my $o={}; bless $o => o; print "Yay" if ($o && !length($o))'
[Corion]: But people writing such code should document the objects they construct and why it makes sense for an object to be invisible as string while being true in a boolean context
[hippo]: That's equal parts clever and horrendous.
[Eily]: the overload version wouldn't return true with "$x" && !length $x though, I guess
[hippo]: The more I look at this code, the more $x is a plain old scalar and the more this condition will never be true. I'm calling it a bug at this point.
[hippo]: Thanks for your input which has soothed my sanity (a little)
[Corion]: Eily: Sure - if you force both things into stringy things, then you break that magic. But that would also mean that you changed the expression, as now $x = 0.00 will be true instead of false as it were before
[Corion]: Ah no, at least in my feeble experiments that doesn't change the meaning
[Corion]: We sell sanity in small packages ;)

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