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当我使用 -hy 标志(用于类型描述)分析我的程序的堆使用情况时,例如
./prog +RTS -hy
我经常在结果中看到->a, ->>a(->>>a其中a是另一种类型或*)。这是什么意思?
->a
->>a
->>>a
a
*