Math::N...rateIth(3)

✨ Math::NumSeq::Base::IterateIth(3) ✨

okay bestie so real talk — this is a page from the User Contributed Perl Documentation section, and it's about Math::NumSeq::Base::IterateIth. yes the name is giving "long and mysterious" but it's literally just a lil helper that goes one by one through your sequence. let's get into it 💖

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🌸 NAME 🌸

Math::NumSeq::Base::IterateIth — iterate by calling ith() successively. no cap, that's the whole thing, that's the vibe 🦋

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✨ SYNOPSIS ✨

here's how you actually use it, copy-paste girlies rise:

package MyNumSeqSubclass;
use Math::NumSeq;
use Math::NumSeq::Base::IterateIth;
@ISA = ('Math::NumSeq::Base::IterateIth',
        'Math::NumSeq');
sub ith {
  my ($self, $i) = @_;
  return something($i);
}

see? you write your own ith and this module handles the rest. iconic behaviour honestly 👑

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💅 DESCRIPTION 💅

so this is a multi-inheritance mix-in (yes, mix-in, we love a flexible queen) and it hands you these three methods:

• rewind()
• next()
• seek_to_i()

the way they work is so simple — they just call ith() to get each successive value, starting from i_start(). that's it. that's the whole method. no plot twist 🎀

this is a super handy way to implement the iterating methods for a NumSeq when there is genuinely nothing special that next() can do beyond a full ith() calculation. like, why be extra when you can just... call the function. periodt 💜

⚠️ important one, bestie: if ith() returns undef, that gets taken as the end of the sequence, and next() returns no values. so don't be returning undef unless you mean it, fr fr 😭

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🦋 SEE ALSO 🦋

• Math::NumSeq

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🌈 HOME PAGE 🌈

<http://user42.tuxfamily.org/math-numseq/index.html>

(the link is right there, go say hi 💖)

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👑 LICENSE 👑

Copyright 2011, 2012, 2013, 2014, 2016, 2019, 2020 Kevin Ryde

Math-NumSeq is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version.

Math-NumSeq is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with Math-NumSeq. If not, see <http://www.gnu.org/licenses/>.

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so yeah that's the whole page 🫶 this one came from perl v5.42.0 and was dated 2025-07-25 — and that's the sign-off, bestie, go write a subclass and slay 💅✨