scala - What's the advantage of using multiple lists of function parameters? - 


scala> def a(i:int)(j:int) = * j a: (i: int)(j: int)int  scala> def b(i:int, j:int) = * j b: (i: int, j: int)int

the 2 definitions similar, , (appear me) same thing.

apart defining function receives implicit parameters or code block parameter, there reason use first definition style?

the main reason "currying" functions in manner enable partial application:

scala> val c = a(5) _ c: int => int = <function1>

here c function takes single int , returns result of multiplying int 5. may set c in 1 method, , pass method expects function taking 1 int parameter. bit trivial in case, flexible range of uses.


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