Matzにっき(2006-12 -20) 経由で tech addict - ruby gotchas and caveats より。Smalltalk に関連していそうなこと、そうでなくとも新しく知ったところを抜粋して Java、Python の勉強を兼ねてメモ。 暗黙の型強制 1. strings aren't auto converted into numbers or strings 8. 1/2 != 0.5 unless require 'mathn' (this is the default in many languages anyway, sometimes integer math is your friend). With mathn 1/2 becomes a different type (Rational) than 0.5 (Float) Java "1" +