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elm-0.19-workshop/advanced/part4/src/PaginatedList.elm
Richard Feldman 2e0d00f947 Add part4
2018-08-05 08:28:31 -04:00

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1.1 KiB
Elm

module PaginatedList exposing (PaginatedList, fromList, map, mapPage, page, total, values)
import Html exposing (Html, a, li, text, ul)
import Html.Attributes exposing (class, classList, href)
import Html.Events exposing (onClick)
-- TYPES
type PaginatedList a
= PaginatedList
{ values : List a
, total : Int
, page : Int
}
-- INFO
values : PaginatedList a -> List a
values (PaginatedList info) =
info.values
total : PaginatedList a -> Int
total (PaginatedList info) =
info.total
page : PaginatedList a -> Int
page (PaginatedList info) =
info.page
-- CREATE
fromList : Int -> List a -> PaginatedList a
fromList totalCount list =
PaginatedList { values = list, total = totalCount, page = 1 }
-- TRANSFORM
map : (a -> a) -> PaginatedList a -> PaginatedList a
map transform (PaginatedList info) =
PaginatedList { info | values = List.map transform info.values }
mapPage : (Int -> Int) -> PaginatedList a -> PaginatedList a
mapPage transform (PaginatedList info) =
PaginatedList { info | page = transform info.page }
-- VIEW