string-upcase[procedure] string-upcase s [start end]
[procedure] string-downcase s [start end]
SRFI-13
See also string-upcase!, string-titlecase
Some implementations call these string-upper and
string-lower.
[procedure] string-upcase s
[procedure] string-downcase s
Chicken, Guile, Bigloo:
doesn't take optional arguments.
See also string-capitalize
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