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doc-src/TutorialI/Trie/document/Option2.tex
author
wenzelm
Fri, 05 May 2000 22:23:27 +0200
changeset 8809
85539b33be03
parent 8771
026f37a86ea7
child 9145
9f7b8de5bfaf
permissions
-rw-r--r--
updated;
\begin{isabelle}%
\isanewline
\isacommand{datatype}~'a~option~=~None~|~Some~'a\end{isabelle}%