string downcase!

(string-downcase! str)

string-downcase! converts a string to lowercase. This one replaces the original string too!

Parameter	Description
str	Input string

Example

Example 1: Convert a string to lowercase - to show the difference to string-downcase

> (define mystr "This is a TEST.")
> mystr
"This is a test."
> (string-downcase! mystr)
"this is a test."
> mystr
"this is a test."