JavaScript ramda modulo Exemples

Exemple #1

Fichier : cnpjAndCpf.js Projet : AIESEC-no-Brasil/Bazicon

const generateDigitWithMask = mask => pipe(
  take(length(mask)),
  split(''),
  mapIndexed((el, i) => el * mask[i]),
  reduce(add, 0),
  modulo(__, 11),
  subtract(11, __)
)

Exemple #2

Fichier : cardNumber.js Projet : AIESEC-no-Brasil/Bazicon

const reduFinalSum = withoutLastDigit => (acc, digit, index, digits) => {
  const digitsMod = modulo(length(digits) - 1, 2)
  const indexMod = modulo(index, 2)

  const shouldUseIndex = cond([
    [hasEvenDigitsLenghtAndEvenIndex, T],
    [hasOddDigitsLenghtAndOddIndex, T],
    [T, F],
  ])(digitsMod, indexMod)

  if (not(shouldUseIndex)) {
    return acc
  }

  const maskIndex = withoutLastDigit[index]

  return acc + mask[maskIndex]
}

Exemple #3

Fichier : cardNumber.js Projet : AIESEC-no-Brasil/Bazicon

const validate = (cardNumber) => {
  const lastDigit = last(cardNumber)
  const withoutLastDigit = dropLast(1, cardNumber)
  const sumDigits = reduce(add, 0, withoutLastDigit)
  const digitsArray = withoutLastDigit.split('')
  const finalSum = digitsArray.reduceRight(reduFinalSum(withoutLastDigit), sumDigits)

  const toSubtract = modulo(finalSum, 10)

  let mod10 = subtract(10, toSubtract)

  if (mod10 === 10) {
    mod10 = 0
  }

  return (mod10 === Number(lastDigit))
}

Exemple #4

Fichier : 17-modulo-filter.js Projet : scottburch/functional-programming-training

var log = require('./log');
var R = require('ramda');

var isOdd = R.modulo(R.__, 2);

var getOdds = R.filter(isOdd);


log(  getOdds([1,2,3,4,5,6,7])  );

Exemple #5

Fichier : cardNumber.js Projet : pagarme/pagarme-js

  toString,
  addIndex,
  reduceRight,
  eqBy,
  juxt,
  init,
  sum,
  split,
} from 'ramda'

const reduceRightIndexed = addIndex(reduceRight)
const clean = replace(/[^0-9]/g, '')

const mask = [0, 1, 2, 3, 4, -4, -3, -2, -1, 0]

const sameParity = eqBy(modulo(__, 2))
const finalSumReducer = (acc, digit, index, digits) =>
  acc + (sameParity(digits.length - 1, index) ? mask[digits[index]] : 0)

const validate = (cardNumber) => {
  const [withoutLastDigit, lastDigit] = juxt([init, last])(cardNumber)
  const finalSum = reduceRightIndexed(
    finalSumReducer,
    sum(withoutLastDigit),
    split('', withoutLastDigit)
  )
  const rest = 10 - (finalSum % 10)
  return (rest === 10 ? 0 : rest) === parseInt(lastDigit, 10)
}

export default pipe(

Exemple #6

Fichier : query.js Projet : jxbadam/pimp-my-sql

const { inspect }     = require('util');
const jsonparse       = require('./json-parse');
const nestify         = require('./nestify');
const nullify         = require('./nullify-empty');


const TIMESTAMP_FORMAT = 'YYYY-MM-DD HH:mm:ss';


const bindError = _.curry((fn, sql, params) => fn.bind(null, sql, params));


const idMatch = _.curry((id, obj) => id + '' === obj.id + '');


const dateIsUnix = _.compose(_.equals(0), _.modulo(_.__, 1));


const momentFromString = (date) => moment(new Date(date));


const momentFromDate = _.cond([
  [ _.isNil,         moment ]
, [ moment.isMoment, _.identity ]
, [ dateIsUnix,      moment.unix ]
, [ _.T,             momentFromString ]
]);


const throwInsertFailedError = (sql, params) => {
  const param_string = inspect(params);

Exemple #7

Fichier : cardNumber.js Projet : AIESEC-no-Brasil/Bazicon

  equals,
  last,
  length,
  modulo,
  not,
  pipe,
  reduce,
  replace,
  subtract,
  toString,
} from 'ramda'

const clean = replace(/[^0-9]/g, '')

const isEven = pipe(
  modulo(__, 2),
  equals(0)
)

const isOdd = pipe(
  isEven,
  not
)

const hasEvenDigitsLenghtAndEvenIndex = (digitsMod, indexMod) =>
  and(isEven(digitsMod), isEven(indexMod))

const hasOddDigitsLenghtAndOddIndex = (digitsMod, indexMod) =>
  and(isOdd(digitsMod), isOdd(indexMod))

const mask = [0, 1, 2, 3, 4, -4, -3, -2, -1, 0]