string replace char

(string-replace-char str oldchr newchr)

string-replace-char replaces oldchr with newchr throughout a string.

Parameter	Description
str	Input string
oldchr	Char to be replaced
newchr	Char to be placed instead of oldchr

Example

Example 1: Replace all O's with o's

> (define a "The quick brown fOx jumps Over the lazy dOg.")
> (string-replace-char a #\O #\o) 
"The quick brown fox jumps over the lazy dog."