Discussion on: ELI5 - "Map-filter-reduce"

-> IntStream.range(0,10).                         
>> map(xs -> xs*xs).                              
>> filter(xs -> xs % 2 == 0).                     
>> reduce(0, (xs_1, xs_2) -> xs_1 + xs_2)         
|  Expression value is: 120                       
|    assigned to temporary variable $7 of type int

scala> (0 to 9).          
     | map(xs => xs*xs).  
     | filter(_ % 2 == 0).
     | reduce(_+_)        
res0: Int = 120