我试过这两行简单的Enum.drop_while ......看起来很容易，但我不明白他们为什么会出现不同的情况：
iex(6)> 1..100 |> Enum.drop_while(fn(x) -> rem(x,10) == 0 end)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
43, 44, 45, 46, 47, 48, 49, 50, ...]
iex(7)> 1..100 |> Enum.drop_while(fn(x) -> rem(10,x) == 0 end)
[3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43,
44, 45, 46, 47, 48, 49, 50, 51, 52, ...]
感谢一些帮助。
答案 0 :(得分：2)
rem x, 10
和
rem 10, x
不是一回事。这就是你得到不同结果的原因。
另见：
iex>div 10, 1
10
iex> div 1, 10
0