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This article is based on a former version of Purely functional, functional programming and for the datastructure page, on the intro of the purely functionnal data structure page.

This article is.redundant, should be deleted

The Functional programming article already discuss what means pure functional. That is an essential feature of FP, there is no heed to write a separate redundant article. — Preceding unsigned comment added by 2806:107E:4:FEDB:649E:5342:FF86:D820 (talk) 14:10, 6 February 2018 (UTC)[reply]