我有一个数据集，我希望将3个重复的行融合成一行3列：
> tail(days,12)
Result type count
412 Cancelled D_(27,32] 122
413 Failed D_(27,32] 11113
414 Successful D_(27,32] 141
415 Cancelled E_(27,32] 133
416 Failed E_(27,32] 8266
417 Successful E_(27,32] 104
418 Cancelled F_(27,32] 92
419 Failed F_(27,32] 7973
420 Successful F_(27,32] 90
421 Cancelled HR_(27,32] 328
422 Failed HR_(27,32] 33697
423 Successful HR_(27,32] 298
我想这样：
type Cancelled Failed Successful
D_(27,32] 122 11113 141
我可以使用apply，但我确信有melt之类的东西可以解决我的问题。