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intersectionBy
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How to use
intersectionBy
function
in
lodash

Best JavaScript code snippets using lodash.intersectionBy(Showing top 2 results out of 315)

origin: yTakkar/React-Instagram-Clone-2.0

/**
 * Returns mutual users of group members and user
 * @param {Number} user UserID
 * @param {Number} group GroupID
 */
const mutualGroupMembers = async (user, group) => {
 let myFollowings = await db.query(
   'SELECT follow_system.follow_to AS user, follow_system.follow_to_username AS username FROM follow_system WHERE follow_system.follow_by=?',
   [user]
  ),
  grpMembers = await db.query(
   'SELECT group_members.member AS user, users.username AS username FROM group_members, users WHERE group_id = ? AND group_members.member = users.id ORDER BY group_members.joined_group DESC',
   [group]
  ),
  mutuals = intersectionBy(myFollowings, grpMembers, 'user')

 return mutuals
}
origin: yTakkar/React-Instagram-Clone-2.0

/**
 * Returns mutual users
 * Returns mutual users of session & user
 * @param {Number} session Session ID
 * @param {Number} user User ID
 */
const mutualUsers = async (session, user) => {
 let myFollowings = await db.query(
   'SELECT follow_system.follow_id, follow_system.follow_to AS user, follow_system.follow_to_username AS username, users.firstname, users.surname FROM follow_system, users WHERE follow_system.follow_by=? AND follow_system.follow_to = users.id',
   [session]
  ),
  userFollowers = await db.query(
   'SELECT follow_system.follow_id, follow_system.follow_by AS user, follow_system.follow_by_username AS username, users.firstname, users.surname FROM follow_system, users WHERE follow_system.follow_to=? AND follow_system.follow_by = users.id',
   [user]
  ),
  mutuals = intersectionBy(myFollowings, userFollowers, 'user')

 return mutuals
}
lodash(npm)intersectionBy

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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