Any v = if(x>0) "xxxx" else 1; // 公共的超类
var v ={val a=b+b;val e = f+g;sqrt(a+e)}
val name =readLine("you name:"); println("you age"); val age = readInt(); printLn("you name"````);
while(n>1) n += 1 ================ for( n>0 to n) n += 1
for( n>0 util s.length) n += 1
不推荐使用 breakable{ for(....) if(..) break }