doc-src/Tutorial/Misc/Last.thy
author nipkow
Wed, 26 Aug 1998 17:27:27 +0200
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Last = List +
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consts last :: 'a list => 'a
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recdef last "measure (%xs. length xs)"
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    "last [x]      = x"
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    "last (x#y#zs) = last (y#zs)"
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end