Strings
Explore the String data type in Haskell by learning how to use double quotes for string values and differentiate them from characters. Understand key string operations such as concatenation with ++ and reversal, and how to convert between strings and numbers using show and read. Gain insight into type annotations and error handling when parsing strings to enhance safe programming practices.
We'll cover the following...
The final basic data type we will cover is the String data type. Once more, a ghci terminal is available for you to follow along:
The String type
Strings represent sequences of characters. To distinguish String values from Char values, they are written in double quotes (e.g. "hello"). Strings can also be empty ("").
Note that single character strings are not the same as characters: they are of a different type, and thus, are not the same value.
Prelude Data.Char> :t "a"
"a" :: String
Prelude