なつたん

The Practice of Programming から

・Chap 5 Debuggingから２つ
プログラミング言語について
Each language feature that prevents some problem has a cost of its own. If a higher-level language makes the simple bug disappear automatically, the price is that it makes it easier to create higher-level bugs. No language prevents you from making mistakes.

こちらは励ましのお言葉
Every bug you can find teach you how to prevent a similar bug from happening again or to recognize it if it does.

・Chap4 User interfaces から
エラーメッセージの出し方について
Don't say that a parameter is too large: report the valid range of values

The Practice of Programming いいよ。