doc-src/Tutorial/Misc/Last.thy
author wenzelm
Thu, 30 Nov 2000 20:03:39 +0100
changeset 10547 efaba354b7f1
parent 5377 efb799c5ed3c
permissions -rw-r--r--
misc;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
5377
efb799c5ed3c *** empty log message ***
nipkow
parents:
diff changeset
     1
Last = List +
efb799c5ed3c *** empty log message ***
nipkow
parents:
diff changeset
     2
consts last :: 'a list => 'a
efb799c5ed3c *** empty log message ***
nipkow
parents:
diff changeset
     3
recdef last "measure (%xs. length xs)"
efb799c5ed3c *** empty log message ***
nipkow
parents:
diff changeset
     4
    "last [x]      = x"
efb799c5ed3c *** empty log message ***
nipkow
parents:
diff changeset
     5
    "last (x#y#zs) = last (y#zs)"
efb799c5ed3c *** empty log message ***
nipkow
parents:
diff changeset
     6
end