How to use the update function from ramda
Find comprehensive JavaScript ramda.update code examples handpicked from public code repositorys.
1289 1290 1291 1292 1293 1294 1295 1296 1297 1298* @param {Array|Arguments} list An array-like object whose value * at the supplied index will be replaced. * @return {Array} A copy of the supplied array-like object with * the element at index `idx` replaced with the value * returned by applying `fn` to the existing element. * @see R.update * @example * * R.adjust(R.add(10), 1, [0, 1, 2]); //=> [0, 11, 2] * R.adjust(R.add(10))(1)([0, 1, 2]); //=> [0, 11, 2]
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14594 14595 14596 14597 14598 14599 14600 14601 14602 14603* @param {Array|Arguments} list The source array-like object to be updated. * @return {Array} A copy of `list` with the value at index `idx` replaced with `x`. * @see R.adjust * @example * * R.update(1, '_', ['a', 'b', 'c']); //=> ['a', '_', 'c'] * R.update(-1, '_', ['a', 'b', 'c']); //=> ['a', 'b', '_'] * @symb R.update(-1, a, [b, c]) = [b, a] * @symb R.update(0, a, [b, c]) = [a, c] * @symb R.update(1, a, [b, c]) = [b, a]
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24 25 26 27 28 29 30 31 32 33 34const flipOperation = (instructions, position) => { const opAtPost = instructions[position] switch (opAtPost.operation) { case "jmp": return R.update(position, { ...opAtPost, operation: "nop" }, instructions) case "nop": return R.update(position, { ...opAtPost, operation: "jmp" }, instructions) case "acc": default:
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