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data structures - Doubly Linked List in a Purely Functional Programming Language - Stack Overflow
In a pure functional language, a doubly-linked list is not that interesting. The idea of a doubly linked list is to be able to grab a node and go in either direction, or to be able to splice into the middle of a list. In a pure functionaly language you probably are better off with one of these two data structures:

A singly linked list with a pointer in the middle, from which you can go either left or right (a variant of Huet's "Zipper")

A finger tree, which is a mind-blowing data structure invented by Ralf Hinze and Ross Paterson.

I'm a big fan of the zipper; it's useful in a lot of situations.
fp  stack_overflow  haskell  dataStructures 
19 hours ago by dicewitch
Queensland FP Lab - Announcing sv 1.0
sv, a CSV library for Haskell by the Queensland Functional Programming Lab, was released over four months ago. Since then, we’ve had feedback on what potential users want from the library, and we have altered the design to the point where we are now releasing a new version: sv 1.0
haskell  csv  data  tooling 
yesterday by kmt

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