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Perl 6Advent Calendar 2017

Day 2

Advent of Code day1をPerl 6で

Last updated at Posted at 2017-12-03

こんにちは、2日目の投稿になります

投稿がなかったのでAdvent of Code day1の私の回答を張っておきます。

  • ソースコード
use v6;                                                                            
                                                                                   
my @a = $*IN.slurp.trim.comb; # (#1)                                                    
say (|@a.tail(+@a - 1),@a[0] Z @a)\ # (#2)                                               
.map(-> ($a, $b) { $a == $b ?? $a !! 0 })\                                         
.sum; 
  • ポイント
    • 文字列から、文字単位のリストを作りたいならcombを使います (#1)
    • | を使うと平たん化ができます (#2)

以上、2日目の投稿でした。

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