Working with string cases

When working with textual data, problems related to string cases arise often. Should a text search be case-sensitive or case-insensitive? How do we convert a string to lowercase or uppercase? In this section, we will look at some recipes to deal with these common problems in a portable way.

How to do it...

• Convert strings to uppercase and lowercase using the strings.ToUpper and strings.ToLower functions, respectively.
• When dealing with text in languages with special uppercase/lowercase mappings (such as Turkish, where “İ” is the uppercase version of “I”), use strings.ToUpperSpecial and strings.ToLowerSpecial
• To convert text to uppercase for use in titles, use strings.ToTitle
• To compare strings lexicographically, use comparison operators
• To test the equivalence of strings ignoring case, use strings.EqualFold

How it works...

Converting a string to uppercase or lowercase is easy:

greet...