Home

Index

How to use the sampleSize function from lodash

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

lodash.sampleSize is a function that returns an array of random elements sampled from a given array, with a specified size.

album.js

129
130
131
132
133
134
135
136
137
138
}
// choose the previews
if (!options.albumPreviews || options.albumPreviews === 'first') {
  this.previews = _.slice(potential, 0, PREVIEW_COUNT)
} else if (options.albumPreviews === 'random') {
  this.previews = _.sampleSize(potential, PREVIEW_COUNT)
} else if (options.albumPreviews === 'spread') {
  if (potential.length < PREVIEW_COUNT) {
    this.previews = _.slice(potential, 0, PREVIEW_COUNT)
  } else {

649

+ 4 other calls in file

lodash-contrib.commonjs.js

GitHub: node4good/lodash-contrib

331
332
333
334
335
336
337
338
339
340
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;
module.exports.set                 = _.set;

122

+ 92 other calls in file

How does lodash.sampleSize work?

lodash.sampleSize is a method in the Lodash library that returns a random sample of elements from an array, with the number of elements in the sample specified by the user. The method takes two arguments: the array to be sampled, and the size of the sample to be returned. The elements in the returned sample are chosen randomly from the original array, and the order of the elements in the sample is arbitrary. If the specified size is greater than the length of the original array, lodash.sampleSize will return a shuffled copy of the entire array.

lodash.js

GitHub: mdmarufsarker/lodash

266
267
268
269
270
271
272
273
274
275
276
277
278
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]


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

+ 15 other calls in file

SendJourneyEmailPreviews.js

GitHub: greenpeace/gpea-marketingcloud-toolkit

43
44
45
46
47
48
49
50
51
52
r = await mcDE.fetchDeRows(deName, {filter: deFilter})
logger.info(`Found ${r.length} rows`)

// random show some candidate rows
let sampleSize = 3
let sampleRows = _.sampleSize(r, sampleSize)

// // manually assign the ContactId to preview
// let targetContactId = '0032u00000DpihGAAR'
// let foundContactRow = r.find(row => row.some(pair => pair.Name==="Id" && pair.Value===targetContactId))

Ai Example

1
2
3
4
5
6
7
8
const _ = require("lodash");

const arr = [1, 2, 3, 4, 5];
const size = 3;

const sample = _.sampleSize(arr, size);

console.log(sample); // Output: [3, 1, 5] (could be any random 3 elements)

In this example, lodash.sampleSize takes an array arr and a size size as arguments, and returns an array of size elements randomly sampled from arr. The resulting sample array could contain any size number of elements from the original arr, randomly selected.

bot.js

GitHub: whitefallen/TwitchSongRequestRadio

96
97
98
99
100
101
102
103
104
105
  songlist.push(this.songlistData[genre]);
  return this.pickSong(songlist, amount);
}

pickSong = (songlist, amount) => {
  return _.sampleSize(_.flattenDeep(songlist).filter((el) => el !== null), amount)
}

removePickedSong = (song) => {
  for(let genre in this.songlistData) {

user.js

GitHub: chalonlubin/jobly-backend

56
57
58
59
60
61
62
63
64
65
 */
static _createPassword(length = 8) {
  const charset =
    "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*";
  const charArray = charset.split("");
  return _.sampleSize(charArray, length).join("");
}

/** Register user with data.
 *

+ 3 other calls in file

articleParser.js

GitHub: jianghujs/jianghujs-seo

153
154
155
156
157
158
159
160
161
162
if (queryType === 'random') {
  const randomAllIdSql = `select id from ${tableName} ${where}`;
  const allIdList = (await jianghuKnex.raw(randomAllIdSql))[0].map(
    row => row.id
  );
  const idList = _.sampleSize(allIdList, limit);
  if (idList.length === 0) {
    return [];
  }
  const randomSql = `select * from ${tableName} ${where} and id in (${idList})`;

quiz.js

GitHub: OpenNTUA/bontua

37
38
39
40
41
42
43
44
45
46
		}
		// When no id is given
		else {
			// Get a random subset of the questions of size 10
			// If the size is bigger than the size of the array, it will return the whole array
			const questions = lodash.sampleSize(Array.from(data[subject]['quizes'].values()), 10);
			await respondWithQuiz(questions, interaction);
		}
	},
};

index.js

GitHub: jannehuo/fin-training-service

28
29
30
31
32
33
34
35
36
37
38
};


app.get('/words/:amount', (req, res) => {
  const amount = req.params.amount;
  const words = getWordsList('finnish');
  const response = _.sampleSize(words, amount).filter(
    (word) => word.length > 1
  );
  res.json(response);
});

index.cjs

GitHub: vzakharov/vovas-utils-ts

141
142
143
144
145
146
147
148
149
150
console.log(
  String(
    isPrimitive(arg) ? arg : _.isFunction(arg) ? arg.toString() : serializer[serializeAs](
      dontShrinkArrays ? arg : _.cloneDeepWith(arg, (value, key) => {
        if (_.isArray(value) && value.length > 3) {
          return _.sampleSize(value, 3);
        }
      })
    )
  ).split("\n").map(paint[color]).join("\n")

+ 3 other calls in file

platform.node.test.js

GitHub: LittleGyaani/kakacrow

43
44
45
46
47
48
49
50
51
52
  isInvalid("ok@ok.33mail.com");
  isInvalid("ok@guerrillamailblock.com");
});

test("should return false if the email is from a blacklisted domain", function () {
  _.sampleSize(MailChecker.blacklist(), 2000).forEach(function (domain) {
    isInvalid("test@" + domain);
    isInvalid("test@subdomain." + domain);
    isValid("test@" + domain + ".gmail.com");
  });

Other functions in lodash

Sorted by popularity

lodash.get is the most popular function in lodash (7670 examples)

Other popular packages:

Home

About