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view src/AgdaStack.agda.replaced @ 11:a8bc8c6b48bd default tip

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fix
author soto@cr.ie.u-ryukyu.ac.jp
date Tue, 15 Sep 2020 07:06:29 +0900
parents 73127e0ab57c
children
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data Element (a : Set) : Set where
  cons : a @$\rightarrow$@ Maybe (Element a) @$\rightarrow$@ Element a

datum : {a : Set} @$\rightarrow$@ Element a @$\rightarrow$@ a
datum (cons a _) = a

next : {a : Set} @$\rightarrow$@ Element a @$\rightarrow$@ Maybe (Element a)
next (cons _ n) = n

record SingleLinkedStack (a : Set) : Set where
  field
    top : Maybe (Element a)