下面是我所面临的一个非常类似问题的简化版本。{-# LANGUAGE RankNTypes #-}
newtype T t = T { getT :: t }
请注意,f1实际上可以是id,因为如果传递的函数对所有t都有效,我们当然可以像这样对它进行专门化:现在让我们考虑一下“逆”函数,f2
f2 :: (T t -> D (T t
line 20, in <module>
File "/private/var/folders/f4/wdrwxpcj0x95cdhkx5qpfbvr0000gp/T/pip-build-k0zi9aqhfailed with error code 1 in /private/var/folders/f4/wdrwxpcj0x95cdhkx5qpfbvr0000gp/T/pip-build-k0zi9aq
我一直试图在一个新的Ubuntu20.04.3LTS安装上安装gnome-tweaks,但没有成功。Reading package lists... DoneReading state information... Donerequested an impossible situation or if you are