2017年5月24日水曜日

開発環境

Think Perl 6: How to Think Like a Computer Scientist (Laurent Rosenfeld(著)、Allen B. Downey(著)、Oreilly & Associates Inc)のPart 1(Starting with the basics)、Chapter 11(Case Study: Data Structure Selection)の Word Frequency Analysis、Exercise: 1、2、3、4.を取り組んでみる。

Exercise: 1、2、3、4.

コード(Emacs)

#!/usr/bin/env perl6
# -*- coding: utf-8 -*-

say '1, 2.';

my $filename = '54767-0.txt';
my %words;
my $total = 0;

my $reg = rx/<[-!"#$%&'()*+,./:;<=>?@\[\\\]^_`{|}~”“’]>/;

for $filename.IO.lines -> $line is copy {
    $line ~~ s:g/<$reg>//;
    for $line.words -> $word is copy {
        $word = lc $word;
        if %words{$word} {
            %words{$word}++;
        } else {
            %words{$word} = 1;
        }
        $total++;
    }
}

say %words.keys.elems;
say $total;
say [+] %words.values;

say '3.';
my @words = sort { %words{$^b} cmp %words{$^a} }, %words.keys;
for @words[0..19] -> $word {
    say "$word: %words{$word}";
}

say '4.';
my %words_list = map { $_ => 1}, 'words.txt'.IO.lines;
for %words.keys -> $word {
    say $word unless %words_list{$word};
}

入出力結果(Terminal, REPL)

$ ./sample1.pl
1, 2.
6597
68907
68907
3.
the: 4322
and: 2712
to: 1960
of: 1726
a: 1714
in: 1260
it: 878
he: 798
was: 776
i: 653
they: 653
that: 639
you: 627
for: 591
with: 581
his: 535
as: 525
on: 523
had: 488
but: 370
4.
tunnelshaped
silvergray
enraptured
goodhearted
livesto
bearhunts
isaac
waterhouse
rusties
america
kindsfrench
m
manythen
straightgrained
smullen
daythree
turk
shiptimber
boomirons
mannering
yawlboat
creetur
containgazette
elijah
sparmakers
potatoballs
spindleshanked
æschylus
canada
millbrook
revolutioneven
deckload
284
ak
william
sufficientgive
housemake
60
forestaysail
april
shovewindows
84116
cornhouse
principled
islandszions
carolina
rhiness
1f3
sich
twentyeight
1d
crusoe
beartraps
aleak
himselfa
ireland
livescouldnt
larning
lampblack
influenced
keigler
‘long
16mo
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monstrous
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africa
mannerings
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ninetysix
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newburyport
2017
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wholl
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steeltrap
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burmah
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