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命名の話
    ソースコードは読み物です



2012/09/28 Fri @Ew Developer Mtg
        Akihiro Nakahara
皆さんソースコード書いてます
     よね?
ソースコードを書いている時に
後でそのソースコードを
誰かが読むかも?
って、思ってま
  す?
1ヶ月後に自分じゃない誰かが
そのソースコードを読んでいる
   姿を想像してます?
してない?
ダメDeath
ソースコードは
 読み物です
みなさんソースコード読んでま
     すよね?
読みにくいソースコードはクソで
      しょ?
だったら、本などの読み物と同
      じ様に
誰もが読めるように書くべき
ソースコードは人間が読みます
あなた以外の人が読みます
あなた以外の人が読み
    ます
ソースコードは誰もが読めるよ
   うに書きましょう
そこで重要なのが名前
変数名、メソッド名、クラス名、
 テーブル名、カラム名・・・
変数名
ソースコード
If flg Then
    file.Delete()
End If
頭の中
「flgがTrueの時、ファイルを削
         除する」
flgってなに?
      エフエルジー?
flgがTrueの時って、0時0分0秒
          の時?
想像するのめんどくさっ
「flg」は意味の無い名前
その変数が何を意味している
   か分かる様に
  名前を付けましょう
flgの名前を変える
ソースコード
If isFileExists Then
    file.Delete()
End If
ただこれだけで読み易くなる
変数名の長さ
変な短縮して意味不明になる
     のならば
長くなっても良いので意味が分
    かる名前にする
短くてわかり難くなるよりも
長くてもわかり易い方が良いと
     思います
メソッド名、クラス名も一緒
ソースコードは読み物で
     す
あなた以外の人が読み
    ます
読みにくいソースコード
   はクソです
読み易くするには
命名重要
常に意識して名前を
 付けましょう!
ありがとうございました

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命名の話(ソースコードは読み物です)