By default the Ruby
String#start_with? method does a case-sensitive match. However, you can perform a case-insensitive match by:
- Converting both, the string and the prefix(es) you are comparing, to lowercase (or uppercase), and;
String#start_with?on the converted strings.
puts "Foobar".downcase.start_with?("foo") #=> true puts "fOObar".downcase.start_with?("foo", "bar", "baz") #=> true # ...
In the examples above, the strings are converted to lowercase first (using the
String#downcase method), and then
String#start_with? is applied on the converted strings.
You can also use the
String#upcase method instead of
String#downcase if you prefer to convert the strings to uppercase instead of lowercase.
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