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## Getting started
### Hello world
```elixir
# hello.exs
defmodule Greeter do
def greet(name) do
message = "Hello, " <> name <> "!"
IO.puts message
end
end
Greeter.greet("world")
```
```bash
elixir hello.exs
# Hello, world!
```
### Variables
```elixir
age = 23
```
## Types
### Operators
```elixir
left != right # equal
left !== right # match
left ++ right # concat lists
left <> right # concat string/binary
left =~ right # regexp
```
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