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How to use the sample function from lodash

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

lodash.sample is a function that returns a random element from an array.

astrobench.js

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* @param- {Object} [guard] Allows working with functions like `_.map`
*  without using their `index` arguments as `n`.
* @returns {Array} Returns the random sample(s) of `collection`.
* @example
*
* _.sample([1, 2, 3, 4]);
* // => 2
*
* _.sample([1, 2, 3, 4], 2);
* // => [3, 1]

711

+ 3 other calls in file

lodash-contrib.commonjs.js

GitHub: node4good/lodash-contrib

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module.exports.result              = _.result;
module.exports.reverse             = _.reverse;
module.exports.reverseOrder        = _.reverseOrder;
module.exports.round               = _.round;
module.exports.runInContext        = _.runInContext;
module.exports.sample              = _.sample;
module.exports.sampleSize          = _.sampleSize;
module.exports.second              = _.second;
module.exports.selectKeys          = _.selectKeys;
module.exports.seq                 = _.seq;

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+ 92 other calls in file

How does lodash.sample work?

lodash.sample is a method from the Lodash library that returns a random element from a collection, such as an array or object.

The method takes one argument, which is the collection to sample from, and can also accept a second argument, n, which specifies the number of elements to sample.

If n is not provided, lodash.sample returns a single random element from the collection. If n is provided, an array of n random elements is returned.

The elements are selected using a randomized algorithm, which means that each element in the collection has an equal chance of being selected.

test.js

GitHub: Waiviogit/waivio-api

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    .eq(expectedLink);
});

it('should return  /object/author_permlink on some obj types', async () => {
  obj = {
    object_type: _.sample(Object.values(_.pick(OBJECT_TYPES, ['HASHTAG', 'DISH', 'DRINK', 'CRYPTO']))),
    author_permlink: faker.random.string(),
  };
  expectedLink = `/object/${obj.author_permlink}`;
  link = wObjectHelper.getLinkToPageLoad(obj);

+ 6 other calls in file

app.js

GitHub: pathikrit/newswall

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for (const date of recentDays(3, currentDevice?.timezone)) {
  const globExpr = path.join(config.newsstand, date, `${searchTerm}.png`)
  const ids = glob.sync(globExpr).map(image => path.parse(image).name)
  if (ids.length === 0) continue
  // Find something that is not current or a random one
  const id = ids.length === 1 ? ids[0] : _.sample(ids.filter(id => !currentPaper || id !== currentPaper))
  const paper = db.newspapers.list(id)
  const displayFor = currentDevice?.newspapers?.find(p => p.id === paper.id)?.displayFor || config.refreshInterval.asMinutes()
  if (paper) return Object.assign(paper, {date: date, displayFor: displayFor})
  if (id) log.error(`Unknown paper found: ${id}`)

+ 10 other calls in file

Ai Example

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const _ = require("lodash");

const myArray = [1, 2, 3, 4, 5];
const randomItem = _.sample(myArray);

console.log(randomItem);
// Output: a random number from the array (e.g. 3)

lodash.js

GitHub: mdmarufsarker/lodash

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console.log(reduceRight); // => 3


const reject = _.reject([4, 5, 6], n => n % 2 == 0);
console.log(reject); // => [5]


const sample = _.sample([1, 2, 3, 4]);
console.log(sample); // => 2


const sampleSize = _.sampleSize([1, 2, 3, 4], 2);
console.log(sampleSize); // => [3, 1]

+ 15 other calls in file

test.js

GitHub: Waiviogit/waivio-api

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    expect(field.body).to.be.eq(body);
  });
});

describe('On related, similar, add-on field', async () => {
  const fieldName = _.sample([FIELDS_NAMES.ADD_ON, FIELDS_NAMES.RELATED, FIELDS_NAMES.SIMILAR]);
  const body = faker.random.string();
  let obj, result;

  beforeEach(async () => {

+ 23 other calls in file

SendJourneyEmailPreviews.js

GitHub: greenpeace/gpea-marketingcloud-toolkit

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// }

// resolve using which row to preview
logger.info(`Sample ${sampleSize.length} rows:`)
logger.info(sampleRows)
let previewRow = _.sample(sampleRows)  // [{ Name: '_CustomObjectKey', Value: '39681' }, ...]

// convert into {Name:Value, ...}
previewRow = previewRow.reduce((accumlator, currentRow) => {
  accumlator[currentRow.Name] = currentRow.Value

ProjectController.js

GitHub: overleaf/overleaf

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  !userIsMemberOfGroupSubscription &&
  !hasPaidAffiliation

const groupsAndEnterpriseBannerVariant =
  showGroupsAndEnterpriseBanner &&
  _.sample(['did-you-know', 'on-premise', 'people', 'FOMO'])

ProjectController._injectProjectUsers(projects, (error, projects) => {
  if (error != null) {
    return next(error)

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+ 15 other calls in file

igdl4.js

GitHub: WanX123/b

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const media_count = metadata.carousel_media_count;
let result_url = new Array();
for (let i = 0; i < media_count; i++) {
	result_url.push({
		type: metadata.carousel_media[i].media_type !== 2 ? 'image' : 'video',
		url: _.sample(metadata.carousel_media[i].image_versions2.candidates).url
	});
}
resolve({
	status: true,

+ 11 other calls in file

instagram.js

GitHub: WanX123/b

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const verified = user.is_verified;
const comments = result.comment_count;
const viewers = result.view_count;
const likes = result.like_count;
const thumbnail = _.sample(image_versions2.candidates).url;
const result_url = _.sample(video_versions).url;
resolve({
	caption: title,
	username,
	full_name,

+ 17 other calls in file

index.js

GitHub: itspasindu/javascript-chatbot-new

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  }
};


const sendWelcomeMessage = (req, res) => {
  res.json({
    responseText: _.sample(welcomeChat),
  });
};


const sendAnswer = async (req, res) => {

+ 4 other calls in file

feed.js

GitHub: masato-ohira/workflow-test

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}


const action = async () => {
  try {
    let feeds = await getFeeds()
    let sample = _.sample(feeds)
    let output = [sample.title, sample.url].join('\n')
    console.log(output)
    // slackHook([output, `※候補 ${feeds.length} から上記を選択`].join('\n'))
    return output

+ 2 other calls in file

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