Top "Lenses" questions

In functional programming, a lens is a composable field accessor.

lenses, fclabels, data-accessor - which library for structure access and mutation is better

There are at least three popular libraries for accessing and manipulating fields of records. The ones I know of are: …

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data-structures haskell record lenses
Functional lenses

Could someone explain functional lenses to me? It's a surprisingly difficult subject to google for and I haven't made any …

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haskell functional-programming lenses
Ramda js: lens for deeply nested objects with nested arrays of objects

Using Ramda.js (and lenses), I want to modify the JavaScript object below to change "NAME:VERSION1" to "NAME:VERSION2" …

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javascript ramda.js lenses