foop/dist/deps/structured/SetCache.js

interfaces that describe their intentions.

/** @ignore 🚧 wip */

var MapCache = require('./MapCache')
var isNil = require('../is/nullOrUndefined')

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED = '__lodash_hash_undefined__'

var SetCache = function SetCache(values) {
  var this$1 = this;

  var index = -1
  var length = isNil(values) ? 0 : values.length

  this.__data__ = new MapCache()
  while (++index < length) {
    this$1.add(values[index])
  }
};

/**
 * Adds `value` to the array cache.
 *
 * @memberOf SetCache
 * @alias push
 * @param {*} value The value to cache.
 * @returns {Object} Returns the cache instance.
 */
SetCache.prototype.add = function add (value) {
  this.__data__.set(value, HASH_UNDEFINED)
  return this
};

/**
 * Checks if `value` is in the array cache.
 *
 * @memberOf SetCache
 * @param {*} value The value to search for.
 * @returns {number} Returns `true` if `value` is found, else `false`.
 */
SetCache.prototype.has = function has (value) {
  return this.__data__.has(value)
};

SetCache.prototype.push = SetCache.prototype.add

module.exports = SetCache

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