import scala._    
import scala.{ Predef => _, _ } 
def f[M[_]]       
def f(m: M[_])    
_ + _             
m _               
m(_)              
_ => 5            
case _ =>         
val (a, _) = (1, 2) 
for (_ <- 1 to 10)  
f(xs: _*)         
case Seq(xs @ _*) 
var i: Int = _    
def abc_<>!       
t._2              
var i: Int = _    
for (_ <- 1 to 10) doIt() 
def f: T; def f_=(t: T)