我在Ruby on Rails入門經典上看到===是給case when的條件作判斷用的但我用以下代碼測試并未覺得有何不同：months="January","February","March","April","May","June","July","August","October","December"0.upto 11 do|month|casewhen 9==monthmonths[8,0]="September"when 11==monthmonths[10,0]="November"endputs monthsend同樣，用下列代碼測試也很正常：if(3===3)puts 3end它們兩者究竟有什么區別，望不吝賜教，謝謝！暈死，應該發在“其他編程語言”里……
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