Does Perl6 have a method for checking substring matches?

Question

How can one check for substring matches in Perl?

The index method returns an Int:

"abc".index("b")
1

Using defined, the result can be turned into a Bool:

"abc".index("b").defined
True

Is this the idiomatic way or is there another method that returns a Bool?

Answer 1

The method is .contains.

say 'abc'.contains('b');  # True

There is also .starts-with and .ends-with.

say 'abc'.starts-with('c'); # False
say 'abc'.starts-with('a'); # True

say 'abc.txt'.ends-with('.txt') # True

You can look at the Str docs for more methods.