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How to use the forEach function from lodash

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

lodash.forEach iterates over an object or an array, and executes a callback function on each element.

astrobench.js

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 * @example
 *
 * _([1, 2, 3]).forEach(function(num) { console.log(num); }).join(',');
 * // => logs each number and returns '1,2,3'
 *
 * _.forEach({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { console.log(num); });
 * // => logs each number and returns the object (property order is not guaranteed across environments)
 */
function forEach(collection, callback, thisArg) {
  var index = -1,

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+ 5 other calls in file

request-helpers-presend.js

GitHub: postmanlabs/postman-runtime

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    onLoadError(err, true);

    return done();
}

_.forEach(results, function (result) {
    // Insert individual param above the current formparam
    result && formdata.insert(new sdk.FormParam(_.assign(formparam.toJSON(), result)),
        formparam);
});

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How does lodash.forEach work?

lodash.forEach is a utility function in the Lodash library that provides an easy way to iterate over elements of an array, collection, or object and perform a given operation on each of them without creating a new array or object. It takes three parameters - the collection to iterate over, the function to call on each iteration, and the context object to use as the this value for the function.

gardener.js

GitHub: gardener/dashboard

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  }
}


module.exports = {
  assignEnvironmentVariables (config, env) {
    _.forEach(environmentVariableDefinitions, (path, name) => {
      let type = 'String'
      if (_.isPlainObject(path)) {
        type = path.type
        path = path.path

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+ 5 other calls in file

lodash-contrib.commonjs.js

GitHub: node4good/lodash-contrib

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module.exports.flip2               = _.flip2;
module.exports.floor               = _.floor;
module.exports.flow                = _.flow;
module.exports.flowRight           = _.flowRight;
module.exports.fnull               = _.fnull;
module.exports.forEach             = _.forEach;
module.exports.forEachRight        = _.forEachRight;
module.exports.forIn               = _.forIn;
module.exports.forInRight          = _.forInRight;
module.exports.forOwn              = _.forOwn;

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+ 92 other calls in file

Ai Example

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const _ = require("lodash");

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

_.forEach(arr, (num) => {
  console.log(num);
});

Output: Copy code

Utils.js

GitHub: PastVu/pastvu

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function rad2meter(rad) {
    return turf.radiansToLength(rad, 'metres');
}

function geoToPrecision(geo, precision) {
    _.forEach(geo, (item, index, array) => {
        array[index] = Utils.math.toPrecision(item, precision || 6);
    });

    return geo;

TooltipInfoService.js

GitHub: viadee/camunda-modeler-tooltip-plugin

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function refresh() {
  if (!TOOLTIP_INFOS_ENABLED) {
    return;
  }

  _.forEach(elementRegistry.getAll(), function (element) {
    if (!supportedTypes.includes(element.type)) return;

    var id = element.id + '_tooltip_info';
    cleanTooltip(element);

+ 3 other calls in file

reference.js

GitHub: akeneo/pim-api-docs

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        } else {
            parameter.schema.items.properties[requiredProperty].patchRequired = true;
        }
    });
}
_.forEach(readOnlyProperties, function(propToDelete) {
    delete parameter.schema.properties[propToDelete];
});
if (parameter.schema && parameter.schema.example) {
    _.forEach(readOnlyProperties, function(propToDelete) {

+ 79 other calls in file

assessment.js

GitHub: navgurukul/sansaar

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        tableDetails.items[item] = propertiesDataInString[tableDetails.items[item]];
      }
    }
  });
} else if (modifiedCont.component === 'options') {
  _.forEach(modifiedCont.value, (innerList) => {
    // eslint-disable-next-line
    if (propertiesDataInString.hasOwnProperty(innerList.value)) {
      innerList.value = propertiesDataInString[innerList.value];
    }

+ 11 other calls in file

display.js

GitHub: navgurukul/sansaar

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  pathwaysV2: 'pathways',
  coursesV2: 'courses',
  exercisesV2: 'exercises',
};

const transformedData = _.forEach(data, (p) => {
  const newKeyName = {};
  _.forEach(keyNames, (kName) => {
    newKeyName[mapping[kName]] = p[kName];
    if (p[kName]) {

+ 7 other calls in file

classes.js

GitHub: navgurukul/sansaar

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  return h.response(errInRecurring).code(errInRecurring.code);
}

// Creating payload for all older registrations for recurring class
if (allRegIds.length > 0) {
  _.forEach(createdClasses, (c) => {
    _.forEach(allRegIds, (id) => {
      registrationPayload.push({
        user_id: id,
        class_id: c.id,

+ 7 other calls in file

pathways.js

GitHub: navgurukul/sansaar

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if (err) {
  logger.error(JSON.stringify(err));
  return h.response(err).code(err.code);
}
if (classes != null && classes.length > 0) {
  _.forEach(classes, (c) => {
    c.is_enrolled = true;
  });
  // eslint-disable-next-line
  for (let i in classes) {

+ 14 other calls in file

bundler.js

GitHub: crstffr/jspm-bundler

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var promises = [];
var completed = [];
groups = (groups) ? groups : _.keys(_bundles);
groups = (_.isArray(groups)) ? groups : [groups];

_.forEach(groups, function (groupName) {
    promises.push(async.asyncify(function () {
        return _bundleGroup(groupName).then(function (bundles) {
            completed = completed.concat(bundles);
        });

+ 11 other calls in file

packExternalModules.js

GitHub: kcjpop/serverless-webpack

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}

function getExternalModules(stats) {
  const externals = new Set();

  _.forEach(stats.compilation.chunks, chunk => {
    // Explore each module within the chunk (built inputs):
    _.forEach(chunk.modules, module => {
      if (isExternalModule(module)) {
        externals.add({

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+ 7 other calls in file

docker.js

GitHub: justinram11/serverless-aws-batch

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let additionalRunCommands = "";
if (this.serverless.service.custom
    && this.serverless.service.custom.awsBatch
    && this.serverless.service.custom.awsBatch.additionalDockerRunCommands) {

    _.forEach(
        this.serverless.service.custom.awsBatch.additionalDockerRunCommands,
        runCommand => {
            additionalRunCommands += `RUN ${runCommand}\n`;
        }

lib.js

GitHub: fred1218/JS_plugins

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var demos = [];
var tpl = fs.readFileSync(path.join(srcDir, widget + '.hbs'), 'utf-8');

_.forEach(pkg.themes, function(theme, index) {
  if (theme.demos.length) {
    _.forEach(theme.demos, function(data, i) {
      demos.push({
        title: format('%s（%s）', theme.name, data.desc || theme.desc),
        url: format('%s/%s/%d', widget, theme.name, i),
        data: {

+ 3 other calls in file

packExternalModules.js

GitHub: danielholmes/serverless-webpack

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/**
 * Add the given modules to a package json's dependencies.
 */
function addModulesToPackageJson(externalModules, packageJson, pathToPackageRoot) {
  _.forEach(externalModules, externalModule => {
    const splitModule = _.split(externalModule, '@');
    // If we have a scoped module we have to re-add the @
    if (_.startsWith(externalModule, '@')) {
      splitModule.splice(0, 1);

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+ 5 other calls in file

commonResponseHandler.js

GitHub: nexusgamingseries/ngs-mean-core

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}


function inputsWereValid(inputs) {
    let valid = true;
    _.forEach(inputs, (v, k) => {
        valid = valid && v.valid;
    });
    return valid;
}

+ 4 other calls in file

utils.js

GitHub: nexusgamingseries/ngs-mean-core

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    } else {
        return false;
    }
} else if (typeof dat == 'object') {
    var noe = true;
    _.forEach(dat, (value, key) => {
        if (!isNullOrEmpty(value)) {
            noe = false;
        }
    });

ChallengeService.js

GitHub: topcoder-platform/challenge-api

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    filter.match_phrase[key] = value;
    boolQuery.push(filter);
  }
});

_.forEach(_.keys(criteria), (key) => {
  if (_.toString(key).indexOf("meta.") > -1) {
    // Parse and use metadata key
    if (!_.isUndefined(criteria[key])) {
      const metaKey = key.split("meta.")[1];

assertions.js

GitHub: uktrade/data-hub-frontend

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const qs = require('qs')


const selectors = require('../../../selectors')


const assertKeyValueTable = (dataTest, expected) => {
  forEach(keys(expected), (key, i) => {
    const rowNumber = i + 1


    if (expected[key] === null) {
      cy.get(selectors.keyValueTable(dataTest).valueCell(rowNumber)).should(

+ 7 other calls in file

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