1Lingua::EN::Numbers::OrUdsienratCeo(n3t)ributed Perl DocLuimnegnutaa:t:iEoNn::Numbers::Ordinate(3)
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6 Lingua::EN::Numbers::Ordinate -- go from cardinal number (3) to ordinal
7 ("3rd")
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10 use Lingua::EN::Numbers::Ordinate;
11 print ordinate(4), "\n";
12 # prints 4th
13 print ordinate(-342), "\n";
14 # prints -342nd
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16 # Example of actual use:
17 ...
18 for(my $i = 0; $i < @records; $i++) {
19 unless(is_valid($record[$i]) {
20 warn "The ", ordinate($i), " record is invalid!\n";
21 next;
22 }
23 ...
24 }
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27 There are two kinds of numbers in English -- cardinals (1, 2, 3...),
28 and ordinals (1st, 2nd, 3rd...). This library provides functions for
29 giving the ordinal form of a number, given its cardinal value.
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32 ordinate(SCALAR)
33 Returns a string consisting of that scalar's string form, plus the
34 appropriate ordinal suffix. Example: "ordinate(23)" returns
35 "23rd".
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37 As a special case, "ordinate(undef)" and "ordinate("")" return
38 "0th", not "th".
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40 This function is exported by default.
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42 th(SCALAR)
43 Merely an alias for "ordinate", but not exported by default.
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45 ordsuf(SCALAR)
46 Returns just the appropriate ordinal suffix for the given scalar
47 numeric value. This is what "ordinate" uses to actually do its
48 work. For example, ordsuf(3) is "rd".
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50 Not exported by default.
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52 The above functions are all prototyped to take a scalar value, so
53 "ordinate(@stuff)" is the same as "ordinate(scalar @stuff)".
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56 * Note that this library knows only about numbers, not number-words.
57 "ordinate('seven')" might just as well be "ordinate('superglue')" or
58 "ordinate("\x1E\x9A")" -- you'll get the fallthru case of the input
59 string plus "th".
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61 * As is unavoidable, "ordinate(0256)" returns "174th" (because ordinate
62 sees the value 174). Similarly, "ordinate(1E12)" returns
63 "1000000000000th". Returning "trillionth" would be nice, but that's an
64 awfully atypical case.
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66 * Note that this library's algorithm (as well as the basic concept and
67 implementation of ordinal numbers) is totally language specific.
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69 To pick a trivial example, consider that in French, 1 ordinates as
70 "1ier", whereas 41 ordinates as "41ieme".
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73 Bored of this...?
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75 use Lingua::EN::Numbers::Ordinate qw(ordinate th);
76 ...
77 print th($n), " entry processed...\n";
78 ...
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80 Try this bit of lunacy:
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82 {
83 my $th_object;
84 sub _th () { $th_object }
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86 package Lingua::EN::Numbers::Ordinate::Overloader;
87 my $x; # Gotta have something to bless.
88 $th_object = bless \$x; # Define the object now, which _th returns
89 use Carp ();
90 use Lingua::EN::Numbers::Ordinate ();
91 sub overordinate {
92 Carp::croak "_th should be used only as postfix!" unless $_[2];
93 Lingua::EN::Numbers::Ordinate::ordinate($_[1]);
94 }
95 use overload '&' => \&overordinate;
96 }
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98 Then you get to do:
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100 print 3 & _th, "\n";
101 # prints "3rd"
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103 print 1 + 2 & _th, "\n";
104 # prints "3rd" too!
105 # Because of the precedence of & !
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107 print _th & 3, "\n";
108 # dies with: "th should be used only as postfix!"
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110 Kooky, isn't it? For more delightful deleria like this, see Damian
111 Conway's Object Oriented Perl from Manning Press.
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113 Kinda makes you like th(3), doesn't it?
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116 Lingua::EN::Inflect provides an "ORD" function, which returns the
117 ordinal form of a cardinal number.
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119 Lingua::EN::Number::IsOrdinal provides an "is_ordinal" function, which
120 returns true if passed an ordinal number.
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123 <https://github.com/neilbowers/Lingua-EN-Numbers-Ordinate>
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126 Copyright (c) 2000 Sean M. Burke. All rights reserved.
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128 This library is free software; you can redistribute it and/or modify it
129 under the same terms as Perl itself.
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132 Sean M. Burke "sburke@cpan.org"
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136perl v5.28.1 2015-07-04 Lingua::EN::Numbers::Ordinate(3)