var a= NumberInt(myVar);
2、給多個變量轉換:
db.data.update({'name': 'zero'}, {'$set': {'value': NumberInt(0)}})
3、在mapreduce中使用:
emit(this._id.p, NumberInt(1))
注:
若NumberInt、NumberLong不生效,可考慮這樣的寫法:
var userIdStr = "NumberLong("+userId+")";
或者:
if(typeof reduce.userId == 'number')
else if(reduce.userId
= new NumberLong(reduce.userId
);
reduce.userId
instanceof NumberLong)reduce.userId
=
reduce.userId
;