magritte v0.1.1 Magritte
Link to this section Summary
Functions
Enchanced pipe operator.
Link to this section Functions
Enchanced pipe operator.
This operator introduces the expression on the left hand as an argument to
the function call on the right hand. The position for given argument is
determined by positopn of ...
operator on the right. If that operator
is not present, then it will use first position as a default.
Examples
iex> [1, [2], 3] |> List.flatten()
[1, 2, 3]
The example above is the same as calling List.flatten([1, [2], 3])
.
You can pick the position where the result of the left side will be inserted:
iex> 2 |> Integer.to_string(10, ...)
"1010"
The example above is the same as calling Integer.to_string(10, 2)
.
You can also join these into longer chains:
iex> 2 |> Integer.to_string(10, ...) |> Integer.parse
{1010, ""}
The operator ...
can be used only once in the pipeline, otherwise
it will return compile-time error:
2 |> Integer.to_string(..., ...)
** (CompileError) Doubled placeholder in Integer.to_string(..., ...)