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author Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
date Tue, 29 May 2018 18:44:59 +0900
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45
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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1 title: CbCによるMoarVMの改良
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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2 author: Takahiro Shimizu
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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3 profile:
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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4 lang: Japanese
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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5
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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6
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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7 # 研究目的
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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8 - Perl5の後継言語として開発されているPerl6はMoarVMと呼ばれるVMを搭載している．
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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9 - Perl6はMoarVM,JVM,JavaScript上で動くRakudoと呼ばれる実装と，コンパイラ開発者用のサブセットであるNQPが主な実装となっている．
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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10 - 現在Perl6及びMoarVMは全体的な速度がPerl5と比較し低下しており，実務として利用できるレベルに達していない．
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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11 - さらにPerl6の実装自体巨大なswitch-case文など見通しが悪くなっている．
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12 - この問題を解決するために現在当研究室で開発している継続を中心にしたContinuation based Cを用いて改良を行う
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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13 - CbCの設計理念からVMの実装と親和性が高い事も推測できる為，実際にCbCを用いてどのようにVMが実装できるかを検証する
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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14
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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15 # 今週の進捗
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16
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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17 * Perl6のnqpで遊んでいました
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18 * いくつか記事を発見しました
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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19 * perl5の `perl-build` モジュールにPull Request送りました
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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20 * lldbでMoarVMを読んでいました
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21
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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22 # Perl6の過去の研究
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23
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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24 * ある程度高速化はされているらしい
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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25 * [助成金貰って高速化が検討されていた](http://news.perlfoundation.org/2017/11/perl-6-performance-and-reliabi-4.html)
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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26 * インライン展開周り
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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27 * インラインclosureが実装された
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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28 * dead codeを削除
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29 * ...etc
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30
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31
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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32 # MoarVMのオペコード
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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33 * `src/core/ops.h` で定義されている
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34 * `add_bb_facts` ではこのオペコードを使いswitch文を生成している
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35 * トータル868個ほどのオペコードが設定されている
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36
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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37 ```
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38 4 #define MVM_OP_no_op 0
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39 5 #define MVM_OP_const_i8 1
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40 6 #define MVM_OP_const_i16 2
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41 7 #define MVM_OP_const_i32 3
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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42 8 #define MVM_OP_const_i64 4
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43 9 #define MVM_OP_const_n32 5
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44 10 #define MVM_OP_const_n64 6
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45 11 #define MVM_OP_const_s 7
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46 12 #define MVM_OP_set 8
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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47 13 #define MVM_OP_extend_u8 9
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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48 14 #define MVM_OP_extend_u16 10
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49 15 #define MVM_OP_extend_u32 11
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Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
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50 ```
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51
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52 # debug用のMoarVM
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53
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54 * gccでデバッグしよとすると相変わらず死ぬ
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55
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56 ```
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57 ...skipping...
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58 from /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Headers/IconsCore.h:23,
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59 from /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Headers/LaunchServices.h:22
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60 from /System/Library/Frameworks/CoreServices.framework/Headers/CoreServices.h:39,
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61 from /System/Library/Frameworks/ApplicationServices.framework/Headers/ApplicationServices.h:23,
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62 from 3rdparty/libuv/src/unix/darwin-proctitle.c:33:
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63 /System/Library/Frameworks/Security.framework/Headers/Authorization.h:193:7: error: variably modified 'bytes' at file scope
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64 char bytes[kAuthorizationExternalFormLength];
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65 ^~~~~
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66 In file included from /System/Library/Frameworks/Security.framework/Headers/AuthSession.h:32,
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67 from /System/Library/Frameworks/Security.framework/Headers/Security.h:43,
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68 from /System/Library/Frameworks/CoreServices.framework/Frameworks/OSServices.framework/Headers/CSIdentity.h:43,
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69 from /System/Library/Frameworks/CoreServices.framework/Frameworks/OSServices.framework/Headers/OSServices.h:27,
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70 from /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Headers/IconsCore.h:23,
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71 from /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Headers/LaunchServices.h:22
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72 from /System/Library/Frameworks/CoreServices.framework/Headers/CoreServices.h:39,
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73 from 3rdparty/libuv/src/unix/fsevents.c:49:
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74 /System/Library/Frameworks/Security.framework/Headers/Authorization.h:193:7: error: variably modified 'bytes' at file scope
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75 char bytes[kAuthorizationExternalFormLength];
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76 ^~~~~
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77 In file included from /System/Library/Frameworks/CoreGraphics.framework/Headers/CGContext.h:21,
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78 from /System/Library/Frameworks/CoreGraphics.framework/Headers/CGBitmapContext.h:9,
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79 from /System/Library/Frameworks/CoreGraphics.framework/Headers/CoreGraphics.h:11,
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80 from /System/Library/Frameworks/ApplicationServices.framework/Headers/ApplicationServices.h:35,
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81 from 3rdparty/libuv/src/unix/darwin-proctitle.c:33:
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82 /System/Library/Frameworks/CoreGraphics.framework/Headers/CGPath.h:391:15: error: expected identifier or '(' before '^' token
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83 typedef void (^CGPathApplyBlock)(const CGPathElement * element);
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84 ^
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85 /System/Library/Frameworks/CoreGraphics.framework/Headers/CGPath.h:393:53: error: unknown type name 'CGPathApplyBlock'
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86 CG_EXTERN void CGPathApplyWithBlock(CGPathRef path, CGPathApplyBlock CF_NOESCAPE block)
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87 ^~~~~~~~~~~~~~~~
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88 make: *** [3rdparty/libuv/src/unix/fsevents.o] Error 1
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89 make: *** Waiting for unfinished jobs....
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90 make: *** [3rdparty/libuv/src/unix/darwin-proctitle.o] Error 1
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91 ```
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92
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93 # やるべきこと
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94
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95 * 具体的に遅い箇所を計測した方がいい
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96 * どうやって計測を図るか
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97 * コンパイラ構成論の資料を読んでオブジェクトパターンを理解しておく
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98
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99
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100 # perl6の小ネタ
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101
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102 * スマートマッチャー演算子 `~~`
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103
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104 ```
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105 > 'hoge' ~~ Str
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106 True
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107 ```
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108
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109 * 継承一覧を取り出すには `.^mro`
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110
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111 ```
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112 > 'hoge'.^mro
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113 ((Str) (Cool) (Any) (Mu))
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114 >
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115 ```
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116
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117 * `^name` か `.WHAT` でクラスを取得できる
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118
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119 ```
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120 > 'hoge'.^name
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121 Str
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122 ```
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123
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124 * `my @env_path = qx/echo $PATH/.split(':'); # Unix-based systems`
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125 * `q:x` か `qq:x` でシェルを実行できる
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126
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127 ```
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128 my @env_path = qx/echo $PATH/.split(':')
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129 [/usr/local/opt/qt/bin /Users/anatofuz/src/google-cloud-sdk/bin /Users/anatofuz/.pyenv/versions/3.6.5/bin /Users/anatofuz/.pyenv/shims /Users/anatofuz/.pyenv/bin /Users/anatofuz/.nodebrew/current/bin /Users/anatofuz/.rbenv/shims /usr/local/opt/gpg-agent/bin /Users/anatofuz/.plenv/shims /Users/anatofuz/.plenv/bin /usr/local/bin /usr/local/sbin /usr/bin /bin /usr/sbin /sbin /Library/TeX/texbin /opt/X11/bin /usr/local/opt/qt/bin /Users/anatofuz/src/google-cloud-sdk/bin /Users/anatofuz/.pyenv/versions/3.6.5/bin /Users/anatofuz/.pyenv/shims /Users/anatofuz/.pyenv/bin /Users/anatofuz/.nodebrew/current/bin /Users/anatofuz/.rbenv/shims /usr/local/opt/gpg-agent/bin /Users/anatofuz/.plenv/shims /Users/anatofuz/.plenv/bin /Users/anatofuz/workspace/go/bin /Users/anatofuz/workspace/go/bin
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130 ]
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131 ```
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132
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133 # perl-build
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134
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135 * plenvで使用しているモジュール
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136 * cpanからPerlの最新バージョンを取得する
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137 * search.cpanがshut downするのでmeta.cpanに移行したがhttps通信になったのでtarが入手できなくなった
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138 * その部分のパッチを書いて送りました
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139
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140
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141 # 来週の予定
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142
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143 * 明日から仙台に行ってきます
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144 * 日曜日には戻ってきます
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145 * OSCのネタとスライドをそろそろ作成していきます
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146 * cbc周りの情報がほしい!!