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na2hiro/gist:f62246100f7bfece8815

Created January 31, 2015 18:03
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Javaにおいてダウンキャストの代替となるパターンマッチ構文の一案
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gistfile1.java
Number number = getNumber();
// before
if(number instanceof Integer){
((Integer)number).someIntegerMethod();
}else if(number instanceof Float){
((Float)number).someFloatMethod();
}
// after
match(number){
case Integer:
number.someIntegerMethod();
case Float:
number.someFloatMethod();
}
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