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Writes data to "stdio" in a table with borders and colors. Can choose a table style to change the look of the table.
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lib/io/ansi/table/spec/headings.ex
defmodule IO.ANSI.Table.Spec.Headings do
@moduledoc """
Derives the headings of a table.
"""
alias IO.ANSI.Table.{Header, Spec}
@doc """
Derives the headings of a table.
## Examples
iex> alias IO.ANSI.Table.Spec.Headings
iex> alias IO.ANSI.Table.Spec
iex> spec = Spec.new([:c4, :c1, :c2], sort_specs: [:c4])
iex> %Spec{headings: headings} = Headings.derive_and_put(spec)
iex> headings
["C4↑", "C1", "C2"]
iex> alias IO.ANSI.Table.Spec.Headings
iex> alias IO.ANSI.Table.Spec
iex> spec = Spec.new(
...> ["station_id", "wind_mph"],
...> sort_specs: ["station_id"],
...> header_fixes: %{"Id" => "ID", "Mph" => "MPH"}
...> )
iex> %Spec{headings: headings} = Headings.derive_and_put(spec)
iex> headings
["Station ID↑", "Wind MPH"]
"""
@spec derive_and_put(Spec.t()) :: Spec.t()
def derive_and_put(%Spec{headers: headers} = spec) do
headings = Enum.map(headers, &Header.to_heading(&1, spec))
put_in(spec.headings, headings)
end
end