7 replies

Flattening Nested Arrays in FP Style

Is there an FP way to flatten an array like so?

// Turn this...
const Decks = [{ id: 1, subdecks: [{ id: 2, subdecks: [{ id: 3, subdecks: []}]}]}]

// Into this...
const result = [{id: 1}, {id: 2}, {id: 3}]

// Turn this...
const Decks = [{ id: 1, subdecks: [{ id: 2, subdecks: [{ id: 3, subdecks: []}]}]}]

// Into this...
const result = [{id: 1}, {id: 2}, {id: 3}]

// Turn this...
const Decks = [{ id: 1, subdecks: [{ id: 2, subdecks: [{ id: 3, subdecks: []}]}]}]

// Into this...
const result = [{id: 1}, {id: 2}, {id: 3}]

// Turn this...
const Decks = [{ id: 1, subdecks: [{ id: 2, subdecks: [{ id: 3, subdecks: []}]}]}]

// Into this...
const result = [{id: 1}, {id: 2}, {id: 3}]

Flattening Nested Arrays in FP Style

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