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Package contains the following modules:
An Elm-language representation of lists with an efficient append operation.
This is particularly useful for efficient logging and pretty printing, where
repeatedly appending lists quickly becomes too expensive. Internally, DList
is a function that prepends elements to its parameter. Thus the append
operation is just function composition. Ultimately, a DList
is converted to a
regular List
by applying the function to the empty list.
Some limitations of the DList
representation are:
We cannot ask for the length of a DList
without converting it to a
regular list.
We cannot test equality on two DList
structures without converting them
to regular lists.
See also: http://package.elm-lang.org/packages/league/difference-list/