Functions

# import IEx.Helpers

Named Functions

IO.puts("hello")
# side effect, print "hello"

hello

:ok

Capture

function = &IO.inspect/1

&IO.inspect/1

i(function)

error: undefined function i/1 (there is no such import)
  #cell:u3zksoroaaguytlpbz74g7litccurzv7:1

As value

Enum.each(1..8, function)

1
2
3
4
5
6
7
8

:ok

Erlang

:random.uniform(2)

1

random_float_fn = &:random.uniform/0

&:random.uniform/0

random_float_fn.()

0.7230402056221108

Stream.repeatedly(random_float_fn) |> Enum.take(10)

[0.94581636451987, 0.5014907142064751, 0.311326754804393, 0.597447524783298, 0.915656206971831,
 0.6669572934854013, 0.47712105608919275, 0.5965100813402789, 0.14210821770124227,
 0.20944855618709624]

import IEx.Helpers, only: [i: 1]

IEx.Helpers

i(&IO.puts/1)

Term
  &IO.puts/1
Data type
  Function
Type
  external
Arity
  1
Implemented protocols
  Enumerable, IEx.Info, Inspect