To start our journey into Clojure, lets be a little introspective and represent ourselves in code.

In this section you will write your first bit of code and learn about using a string in Clojure.

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So who are you?

We can write a sentence about ourselves as a string. A string is a collection of characters and is always between double quotes, for example "I am a string".

Lets look at the simplest possible way you could write some information about yourself

"John Stevenson, age 21, height 6ft4, blue eyes, hobbies include Clojure"

Write a brief description of yourself

Using a string, define yourself by including details such as name, age, eye colour and hobbies. None of this information has to be true.

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So What is a String?

• A string is a group of characters as a single value
• A string can also be thought of as a collection of characters
• Once you create a string you cannot change it (immutable)

Strings are used in code for things like peoples names and other non-numerical information, such as email & postal addresses.

In the financial world, strings may be used to keep records of transactions, combining to create a history of all the transactions that month on a bank statement.

Strings are also commonly used to keep a log of what your code is doing, especially when there are errors occurring. A very basic way to debug your code is to print out error messages as strings.

Technical Note: A string is a type and in Clojure that type is java.lang.String. Strings in Java are immutable (cannot be changed when created) so it makes sense to use the Java String type than create a specific one for Clojure.