Revision as of 21:22, 15 April 2019 edit Andy Dingley (talk \| contribs) Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers 163,319 edits →External links modified ← Previous edit		Revision as of 21:23, 15 April 2019 edit undo Andy Dingley (talk \| contribs) Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers 163,319 edits →Idempotent or injective? Next edit →
Line 123: == [[Idempotent]] or [[injective]]? == Any thoughts on [https://en.wikipedia.org/w/index.php?title=Functional_programming&diff=892619256&oldid=892561226 this]? {[{tq\|Removed the inaccurate use of idempotent. Having the same function output for a value x is injectivity, not idempotency. The article declared that calling f twice with the same value x produces f(x) each time. This is just a claim on uniqueness. This is equivalent to saying that: for x, y in D and function f: D -> co(D), that if f(x) = f(y), then x=y. This is precisely injectivity. If functional languages acted as f(f(x)) = f(x), then for any value x, a function of x would be identical to its...}} {{ping\|2600:1009:B112:79C8:75D8:597D:23FC:A3A4}} [[User:Andy Dingley\|Andy Dingley]] ([[User talk:Andy Dingley\|talk]]) 21:22, 15 April 2019 (UTC)

Talk:Functional programming: Difference between revisions