My reduce function will then sum up the counters (which are just integers with the value of 1), thus providing me with the number of times a date occurs in a target earthquake file.

reduce函数将对计数器(只是一些值为1的整数)进行总计。因此，提供给我的是在目标地震文件中某一个日期出现的次数。

youdao

My reduce function will then sum up the counters (which are just integers with the value of 1), thus providing me with the number of times a date occurs in a target earthquake file.

reduce函数将对计数器(只是一些值为1的整数)进行总计。因此，提供给我的是在目标地震文件中某一个日期出现的次数。

youdao