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1. sicp.js sicp.js

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   const log = (...args) => console.log.apply(null, args)

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   const cons = (x, y) => f => f(x,y)

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   const car = x => x((a, _) => a)

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   const cdr = x => x((_, b) => b)

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   const add = (list, el) => cons(el, list)