Strings

Elixir strings are a sequence of bytes.

string = <<104,101,108,108,111>>
"hello"

<< >> tells the compiler that its elements are bytes.

Charlists

Elixir “strings” are represented with a sequence of bytes, not by an array of characters.

In Elixir ‘char lists’, each value is the Unicode code point.

You can get a character’s code point by using ?

Charlist support is mainly included because it is required for some Erlang modules.

?Z
# 90
# This allows you to use the notation ?Z rather than ‘Z’ for a symbol.

String.length "Hello"
# 5

String.replace("string", "char_to_replace", "char_to_put")
String.replace("Hello", "e", "a")
# "Hallo"

String.duplicate("Oh my ", 3)
# "Oh my Oh my Oh my "


String.split("Hello World", " ")
["Hello", "World"]