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早く失敗する！ 原則：デバッグを減らし、より信頼性の高いソフトウェアを作成する

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アプリケーションでエラーが発生した場合、このエラーを処理するための正反対のアプローチが2つあります。
許して！ アプローチ：アプリケーションは引き続き実行され、エラーの結果を最小限に抑えようとします。
早く失敗する！ アプローチ：アプリケーションはすぐに動作を停止し、エラーを報告します。


これらの質問に答えるために、簡単な例を見てみましょう。

噴水の横にある水が汚染されているという警告を表示する簡単なWebページを作成する必要があるとします。
次のHTMLがこのタスクを実行します。
<html> <body> <h2 style="color:red;">Important!</h2> <p>Please <b>DO NOT</b> drink this water!</p> </body> </html>

ブラウザでのこのコードの結果は次のようになります。
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ここで、HTMLコード内で小さな間違いを犯します。
タグの代わりに、タグを使用します
    DO NOT,    : 
 <p>Please <b>DO NOT<b> drink this water!</p> 
   : 
    ?   ? 
 
     .    HTML-  .      Firefox, Google Chrome, Internet Explorer, Opera  Safari   : 
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 ,      Forgive!,             .    ,     ,   .          .   ! 
 
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Rule of Repair The Art of Unix Programming , :
- , .

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var table_row_index = 1 ... table_row_indx = table_row_index + 1

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:
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.
. Assert
. fail fast .
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Source: https://habr.com/ru/post/J218325/

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