Strings

String Interpolation

Use #{expr} inside double-quoted strings to embed expressions.

lang = "Elixir"
IO.puts("Hello, #{lang}!")

String Functions

The String module provides common operations:

IO.puts(String.length("hello"))    # 5
IO.puts(String.upcase("hello"))    # HELLO
IO.puts(String.reverse("hello"))   # olleh

Your Turn

Given lang = "Elixir":

1. Print "Hello, Elixir!" using interpolation
2. Print the length of "Elixir" (6)
3. Print "ELIXIR" using String.upcase
4. Print "rixilE" using String.reverse