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LoDashStatic.countBy
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countBy
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LoDashStatic

Best JavaScript code snippets using lodash.LoDashStatic.countBy(Showing top 10 results out of 315)

origin: ExpediaDotCom/haystack-ui

function createServicesSummary(trace) {
  const services = _.countBy(trace, span => span.serviceName);

  return _.keys(services).map(service => ({
    name: service,
    spanCount: services[service]
  }));
}
origin: suguru03/aigle

it('should execute with object and catch an error', () => {
  const error = new Error('error');
  Aigle.mixin({ countBy: _.countBy }, { override: true });
  return Aigle.countBy({ a: 0, b: 1, c: 2 }, (n) => {
   return n % 2 ? Aigle.delay(DELAY, n) : Aigle.reject(error);
  })
   .then(assert.fail)
   .catch((err) => assert.strictEqual(err, error));
 });
origin: suguru03/aigle

it('should execute with object', () => {
  Aigle.mixin({ countBy: _.countBy }, { override: true });
  const object = { a: 1.1, b: 1.4, c: 2.2 };
  return Aigle.delay(DELAY, object)
   .countBy((n) => Aigle.delay(DELAY, Math.floor(n)))
   .then((object) => assert.deepStrictEqual(object, { '1': 2, '2': 1 }));
 });
origin: tsub/serverless-plugin-subscription-filter

preCheckResourceLimitExceeded(functions) {
  const logGroupNames = _.flatMap(functions, (functionName) => {
   const functionObj = this.serverless.service.getFunction(functionName);

   return functionObj.events;
  }).filter(event => event.subscriptionFilter)
   .map(event => event.subscriptionFilter.logGroupName);

  _.mapKeys(_.countBy(logGroupNames), (value, key) => {
   if (value > 1) {
    const errorMessage = `
 Subscription filters of ${key} log group

 - Resource limit exceeded..

  You've hit a AWS resource limit:
  http://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/cloudwatch_limits_cwl.html

  Subscription filters: 1/log group. This limit cannot be changed.
    `;
    throw new this.serverless.classes.Error(errorMessage);
   }
  });
 }
origin: smirnoffnew/Example_React_Node_Full_Application

const fetchFiles = async () => {
 let nextQuery = null;
 let countOfDeletedFiles = 0;
 let countOfLeavedFiles = 0;
 const timeLimit = moment()
  .add(-config.uploads.unusedImagesTimeLatency, 'ms');
 do {
  const [files, newNextQuery] = await Firebase
   .storage.getFiles(config.uploads.imagesDir, 10, nextQuery);
  nextQuery = newNextQuery;
  const results = await Promise.all(
   files.map(file => processFile(file.name, timeLimit))
  );
  const { true: _countOfDeletedFiles, false: _countOfLeavedFiles } = _.countBy(results);
  countOfLeavedFiles += _countOfLeavedFiles || 0;
  countOfDeletedFiles += _countOfDeletedFiles || 0;
 } while (nextQuery);
 log.info('processed %s files, deleted: %s, leaved: %s', countOfDeletedFiles + countOfLeavedFiles, countOfDeletedFiles, countOfLeavedFiles);
}
origin: UPchieve/server

function getSessionStatsPerSegment(sessionsWithExtras, segmentSlug, timeScale) {
 const sessionGroups = _.groupBy(sessionsWithExtras, ({ createdAt }) =>
  getScaledTimeByTimeScale(timeScale, moment.utc(createdAt))
 )

 return _.mapValues(sessionGroups, sessions => {
  const successfulSessions = _.filter(sessions, 'isSuccessful')
  return {
   count: sessions.length,
   durationSecSum: _.sumBy(sessions, 'durationSeconds'),
   waitSecSum: _.sumBy(sessions, 'waitSeconds'),
   messageSum: _.sumBy(sessions, ({ messages }) => messages.length),
   successfulMatches: successfulSessions.length,
   'day-of-week': _.countBy(sessions, 'dayOfWeek'),
   'hour-of-day': _.countBy(sessions, 'hourOfDay'),
   topic: _.countBy(sessions, 'type'),
   'sub-topic': _.countBy(sessions, 'subTopic')
  }
 })
}
origin: leossnet/jetcalc

_.countBy(splittedInfo, function (n){
      return _.includes(n,'processor');
    })
origin: UPchieve/server

_.map(_.countBy(students, 'zipCode'), (count, zipCode) => {
 if (zipCode !== 'undefined') {
  return [
origin: UPchieve/server

const certificateCounts = _.countBy(allCertifications, _.identity)
origin: suguru03/aigle

it('should catch an error', () => {
  const error = new Error('error');
  Aigle.mixin({ countBy: _.countBy }, { override: true });
  return Aigle.countBy([0, 1, 2], (n) => {
   return n % 2 ? Aigle.delay(DELAY, n) : Aigle.reject(error);
  })
   .then(assert.fail)
   .catch((err) => assert.strictEqual(err, error));
 });
lodash(npm)LoDashStaticcountBy

JSDoc

Creates an object composed of keys generated from the results of running each element of collection through
iteratee. The corresponding value of each key is the number of times the key was returned by iteratee. The
iteratee is invoked with one argument: (value).

Most used lodash functions

  • LoDashStatic.map
    Creates an array of values by running each element in collection through iteratee. The iteratee is
  • LoDashStatic.isEmpty
    Checks if value is empty. A value is considered empty unless it’s an arguments object, array, string
  • LoDashStatic.forEach
    Iterates over elements of collection invoking iteratee for each element. The iteratee is invoked wit
  • LoDashStatic.find
    Iterates over elements of collection, returning the first element predicate returns truthy for.
  • LoDashStatic.pick
    Creates an object composed of the picked `object` properties.
  • LoDashStatic.get,
  • LoDashStatic.isArray,
  • LoDashStatic.filter,
  • LoDashStatic.merge,
  • LoDashStatic.isString,
  • LoDashStatic.isFunction,
  • LoDashStatic.assign,
  • LoDashStatic.extend,
  • LoDashStatic.includes,
  • LoDashStatic.keys,
  • LoDashStatic.cloneDeep,
  • LoDashStatic.uniq,
  • LoDashStatic.isObject,
  • LoDashStatic.omit

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