TIL a small trick on Elixir console (iex) that is the helper i/1
When you type some piece of code on iex e.g:
iex(1)> IO.inspect {:a, :b}
{:a, :b}
And after that you type i. This helper will print the type information about the last command typed on iex.
iex(1)> I
Term
{:a, :b}
Data type
Tuple
Reference modules
Tuple
Implemented protocols
IEx.Info, Inspect
You also can specify a term to the helper as on the example below.
iex(3)> i (4 / 2)
Term
2.0
Data type
Float
Reference modules
Float
Implemented protocols
IEx.Info, Inspect, List.Chars, String.Chars
iex(4)> i "hello"
Term
"hello"
Data type
BitString
Byte size
5
Description
This is a string: a UTF-8 encoded binary. It's printed surrounded by
"double quotes" because all UTF-8 encoded code points in it are printable.
Raw representation
<<104, 101, 108, 108, 111>>
Reference modules
String, :binary
Implemented protocols
Collectable, IEx.Info, Inspect, List.Chars, String.Chars
And that's it for today.
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