Elixir BASIC Data structure

Some of the underlying data structures in elixir: integers, floating-point numbers, strings, atoms, lists, tuples

integers, floating-point numbers, strings similar to other languages

Atomic: A constant named value in Ruby similar to symbols in Erlang is defined with the beginning of the capital letter

iex> :hello:hello

iex> :hello == :worldfalse



列表：Elixir用方括号来表示一个列表，列表内元素的类型是随意的
iex(13)> [2,3,4]
[2, 3, 4]

++  --
iex(14)> [2,3,4] ++ [5,6,7]
[2, 3, 4, 5, 6, 7]
iex(15)> [2,3,4] -- [1,2]
[3, 4]

列表的头和尾
iex(21)> list = [1,2,3]
[1, 2, 3]
iex(22)> hd(list)
1
iex(23)> tl(list)
[2, 3]

元组：Elixir用花括号来表示元组

elem--取元组第几个
iex(26)> tuple = {:ok, "hello"}
{:ok, "hello"}
iex(27)> elem(tuple, 0)
:ok
iex(28)> elem(tuple, 1)
"hello"

Elixir BASIC Data structure