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Discussion on: The only thing you need is... reduce

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Bruno Dias • Edited

Last week, on a stack meeting, I explained the same derivations using reduce. :)

It's also nice to point out that you can also implement reduce on custom containers.

class Identity { // Just holds a single value 
  constructor(x) { this.x = x; }
  reduce(f, initial) { return f(initial, this.x); }

const base = new Identity(1);
base.reduce((acc, x) => acc + x, 10); // 11
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