Mercurial Mercurial > repos > isabelle / file revision
summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help
Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc-src/Tutorial/Recdef/last
author nipkow
Fri, 12 Nov 1999 17:45:36 +0100
changeset 8016 b7713108ffd8
parent 6100 40d66bc3e83f
permissions -rw-r--r--
Added the proof by Nielson & Nielson.

consts last :: 'a list => 'a
recdef last "measure (%xs. length xs)"
  "last [x]      = x"
  "last (x#y#zs) = last (y#zs)"
isabelle