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urbit.org/docs/programming/reference/library/src/4b/gate/cass.md
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2### `++cass`
4To lowercase
6Produce the case insensitive (all lowercase) [`++cord`]() of a [`++tape`]().
8Accepts
9-------
11`vib` is a `++tape`.
13Produces
14--------
16A `++cord`.
18Source
19------
21 ++ cass :: lowercase
22 |= vib/tape
23 %+ rap 3
24 (turn vib |=(a/@ ?.(&((gte a 'A') (lte a 'Z')) a (add 32 a))))
26Examples
27--------
29 ~zod/try=> (cass "john doe")
30 7.309.170.810.699.673.450
31 ~zod/try=> `cord`(cass "john doe")
32 'john doe'
33 ~zod/try=> (cass "abc, 123, !@#")
34 2.792.832.775.110.938.439.066.079.945.313
35 ~zod/try=> `cord`(cass "abc, 123, !@#")
36 'abc, 123, !@#'
39***