LukasWorld
In Dave Thoma’s programming book there is the following line of code:
IO.puts File.read!( *"* */usr/share/dict/words"* )
|> String.split
The exclamation mark ! returns the result, which would otherwise be returned in the {:ok, result} tuple.
This made me wonder if there is a method of piping only selected parameters to the next function in the pipe.
If I have:
{:ok, some_value} |> OI.puts #Is there any way of printing the value of some_value?
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NobbZ
There are some hex-packages available that claim to be able to deal with piping
:oktuples, but personally I tend to do one of the following (in order of preference):withrather than pipingelem/2edit Add
elem/2to the list.OvermindDL1
No error checking or anything then, you might pipe an error value for example, with, the
oklibrary, theexceptionallibrary are all better at that.LukasWorld
Thanks.
Seems using elem as an intermediary is the easiest and dirtiest method of passing specific tuple elements.