33 lines
510 B
Markdown
33 lines
510 B
Markdown
|
# Lamba or Anonymous Functions
|
||
|
|
|
||
|
|
## Create an anonymous function and bind it to a variable
|
||
|
|
|
||
|
|
### Simple one
|
||
|
|
|
||
|
|
```elixir
|
||
|
|
iex> func = fn -> IO.puts("Hello") end
|
||
|
|
#Function<21.126501267/0 in :erl_eval.expr/5>
|
||
|
|
iex> func.()
|
||
|
|
Hello
|
||
|
|
:ok
|
||
|
|
```
|
||
|
|
|
||
|
|
### One with arguments
|
||
|
|
|
||
|
|
```elixir
|
||
|
|
iex> func = fn t -> IO.puts(t) end
|
||
|
|
#Function<7.126501267/1 in :erl_eval.expr/5>
|
||
|
|
iex> func.("Hello")
|
||
|
|
Hello
|
||
|
|
:ok
|
||
|
|
```
|
||
|
|
|
||
|
|
Another solution is the `&` operator used as syntastic sugar
|
||
|
|
|
||
|
|
```elixir
|
||
|
|
iex> func = &(&1 + &2)
|
||
|
|
&:erlang.+/2
|
||
|
|
iex> func.(2, 2)
|
||
|
|
4
|
||
|
|
```
|