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map_sorter
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Sorts a list of maps per a list of sort specs.
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lib/ie.ex
defmodule IE do
@moduledoc false
alias MapSorter.SortSpecs
require MapSorter
@people [
%{name: "Mike", likes: "ski, arts", dob: ~D[1992-04-15]},
%{name: "Mary", likes: "travels" , dob: ~D[1992-04-15]},
%{name: "Bill", likes: "karate" , dob: ~D[1977-08-28]},
%{name: "Joe" , likes: "boxing" , dob: ~D[1977-08-28]},
%{name: "Jill", likes: "cooking" , dob: ~D[1976-09-28]}
]
# Functions for iex session...
#
# Examples:
#
# require IE
# IE.use
# people()
# sort(people(), asc: :dob, desc: :likes)
# Application.put_env(:map_sorter, :structs_enabled?, true)
# r(SortSpecs)
# people()
# sort(people(), asc: :dob, desc: :likes)
# people_as_keywords()
# sort(people_as_keywords(), asc: :dob, desc: :likes)
# to_comp_fun([:dob, desc: :likes])
# to_quoted([:dob, desc: :likes])
# to_quoted(quote do: Tuple.to_list({:dob, {:desc, :likes}}))
# to_quoted({:dob, :likes})
# to_quoted({:dob, :likes, :name})
# to_quoted(%{asc: :dob, desc: :likes, ask: :name})
# to_quoted(3.1416)
# adapt_string("&1[~D[2017-11-02]] < ...", true)
# adapt_string("&1[~D[2017-11-02]] < ...", false)
defmacro use() do
quote do
import IE
alias MapSorter.SortSpecs
require MapSorter
:ok
end
end
def people(), do: @people
def people_as_keywords() do
Enum.map(@people, &Keyword.new/1)
end
# Delegation only works with functions...
def sort(maps, sort_specs), do: MapSorter.sort(maps, sort_specs)
defdelegate adapt_string(string, structs_enabled?), to: SortSpecs
defdelegate to_comp_fun(sort_specs), to: SortSpecs
defdelegate to_quoted(sort_specs), to: SortSpecs
end