14 print "Identifier: %s" % x
18 identifier foo =~ "foo";
29 print "Contains foo: %s" % x
33 identifier foo !~ "foo";
44 print "Does not contain foo: %s" % x
48 identifier foo =~ "foo$";
59 print "Ends by foo: %s" % x
63 identifier foo =~ "^foo";
74 print "Begins by foo: %s" % x