1Math::NumSeq::ConcatNumUbseerrs(C3o)ntributed Perl DocumMeanttha:t:iNounmSeq::ConcatNumbers(3)
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NAME

6       Math::NumSeq::ConcatNumbers -- concatenate digits of i, i+1
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SYNOPSIS

9        use Math::NumSeq::ConcatNumbers;
10        my $seq = Math::NumSeq::ConcatNumbers->new;
11        my ($i, $value) = $seq->next;
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DESCRIPTION

14       The concatenation of i and i+1 as digits, starting from i=0,
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16           1, 12, 23, 34, 45, 56, 67, 78, 89, 910, 1011, 1112, ...
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18       The default is decimal, or optional "radix" parameter selects another
19       base.
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21       Since the two i and i+1 usually have the same number of digits, the
22       resulting concatenated value has an even number of digits.  The
23       exception is at i=9 i+1=10, or i=99 i+1=100, etc, i=99..99 when the
24       resulting value has an odd number of digits.
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26       Being an even number of digits makes power gaps between for instance 89
27       and 1011, then 998999 and 10001001.
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29   Concat Count
30       Option "concat_count => $c" selects how many of i,i+1,i+2,i+3,etc are
31       concatenated.  For example "concat_count => 3" gives
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33           12, 123, 234, 345, 456, 567, 678, 789, 8910, 91011, 101112, 111213, ...
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35       "concat_count => 1" means all integers (the same as Math::NumSeq::All).
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FUNCTIONS

38       See "FUNCTIONS" in Math::NumSeq for the behaviour common to all path
39       classes.
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41       "$seq = Math::NumSeq::ConcatNumbers->new ()"
42       "$seq = Math::NumSeq::ConcatNumbers->new (radix => $r, concat_count =>
43       $c)"
44           Create and return a new sequence object.
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46   Random Access
47       "$value = $seq->ith($i)"
48           Return the concatenation of $i, "$i+1", etc.
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SEE ALSO

51       Math::NumSeq::All, Math::NumSeq::AllDigits
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HOME PAGE

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

57       Copyright 2011, 2012, 2013, 2014, 2016, 2018, 2019 Kevin Ryde
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59       Math-NumSeq is free software; you can redistribute it and/or modify it
60       under the terms of the GNU General Public License as published by the
61       Free Software Foundation; either version 3, or (at your option) any
62       later version.
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64       Math-NumSeq is distributed in the hope that it will be useful, but
65       WITHOUT ANY WARRANTY; without even the implied warranty of
66       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
67       General Public License for more details.
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69       You should have received a copy of the GNU General Public License along
70       with Math-NumSeq.  If not, see <http://www.gnu.org/licenses/>.
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74perl v5.32.1                      2021-01-27    Math::NumSeq::ConcatNumbers(3)
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