How to use the memoize function from lodash

Find comprehensive JavaScript lodash.memoize code examples handpicked from public code repositorys.

astrobench.js

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*   'fred': { 'name': 'fred', 'age': 40 },
*   'pebbles': { 'name': 'pebbles', 'age': 1 }
* };
*
* // modifying the result cache
* var get = _.memoize(function(name) { return data[name]; }, _.identity);
* get('pebbles');
* // => { 'name': 'pebbles', 'age': 1 }
*
* get.cache.pebbles.name = 'penelope';

711

+ 3 other calls in file

lodash-contrib.commonjs.js

GitHub: node4good/lodash-contrib

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module.exports.matchesProperty     = _.matchesProperty;
module.exports.max                 = _.max;
module.exports.maxBy               = _.maxBy;
module.exports.mean                = _.mean;
module.exports.meanBy              = _.meanBy;
module.exports.memoize             = _.memoize;
module.exports.merge               = _.merge;
module.exports.mergeWith           = _.mergeWith;
module.exports.method              = _.method;
module.exports.methodOf            = _.methodOf;

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+ 92 other calls in file

addok.cjs

GitHub: BaseAdresseNationale/ban-plateforme

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const {slugify} = require('@etalab/adresses-util')
const {getCenterFromPoints, derivePositionProps} = require('../../util/geo.cjs')
const {getCodeDepartement, getPLMCodeCommune, getNomCommune, getDepartement, getRegion, getCommune, getCommunes} = require('../../util/cog.cjs')
const geo = require('../../../geo.json')


const buildContext = memoize(codeDepartement => {
  const departement = getDepartement(codeDepartement)
  const region = departement.region ? getRegion(departement.region) : departement
  return uniq([codeDepartement, departement.nom, region.nom]).join(', ')
})

lodash.js

GitHub: mdmarufsarker/lodash

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delay();


const flip = _.flip((a, b, c) => [a, b, c]);
console.log(flip(1, 2, 3)); // => [2, 1, 3]


const memoize = _.memoize((a, b) => a + b);
console.log(memoize(1, 2)); // => 3


const negate = _.negate(n => n > 0);
console.log(negate(1)); // => false

+ 15 other calls in file

index.js

GitHub: everscale-contest/devex

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const deprecations = require('./deprecations/index')
const miscellaneous = require('./miscellaneous/index')
const configObject = require('./../config')
const { validSeverityMap } = require('../config/config-validator')


const notifyRuleDeprecated = _.memoize((ruleId, deprecationMessage) => {
  const message = deprecationMessage
    ? `[solhint] Warning: rule '${ruleId}' is deprecated, ${deprecationMessage}.`
    : `[solhint] Warning: rule '${ruleId}' is deprecated.`
  console.warn(chalk.yellow(message))

umzug.js

GitHub: Purrrrrr/Tanssiaistietokanta

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  return versionModels[name] ?? getDb(name)
}
function getModel(name) {
  return models[name] ?? getDb(name)
}
const getDb = memoize(function getDb(name) {
  return new NeDB({
    filename: path.join(dbPath, name+'.db'),
    autoload: true
  })

boot-script-utils.js

GitHub: maybesmurf/gitter

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  );


  return assets;
}


const bootScriptHelper = _.memoize(
  function(/*[...chunks, parameters]*/) {
    const chunks = [].slice.call(arguments, 0, -1);
    const parameters = [].slice.call(arguments, -1)[0];

functiondemo.js

GitHub: Hupeng7/es6demo

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//flipped1---> [ 'd', 'c', 'b', 'a' ]


//_.memoize(func,[resolver])
var memoize1 = { 'a': 1, 'b': 2 };
var memoize2 = { 'c': 3, 'd': 4 };
var values = _.memoize(_.values);
var memoize3 = values(memoize1);
console.log('memoize3--->', memoize3);
//memoize3---> [ 1, 2 ]
var memoize4 = values(memoize2);

+ 3 other calls in file

main.js

GitHub: Cactusinhand/gitlabhq

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const { getCSSPath } = require('./get_css_path');
const { getStartupCSS } = require('./get_startup_css');
const { log, die } = require('./utils');
const { writeStartupSCSS } = require('./write_startup_scss');

const memoizedCSSPath = memoize(getCSSPath);

const runTask = async ({ outFile, htmlPaths, cssKeys, purgeOptions = {} }) => {
  try {
    log(`Generating startup CSS for HTML files: ${htmlPaths}`);

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