(string-prefix-ci? pattern str)

string-prefix-ci? returns true if the str begins with the pattern and false otherwise. This is a case insensitive version of string-prefix?

Parameter	Description
pattern	The prefix string to look for at the start of str
str	Input string

Example

Example 1: Checking if a string begins with a prefix, case insensitive.

> (define mystr "VAR_X")
> (string-prefix? "var" mystr)
#t