How to use

reduce

function

in

lodash

reduce(scenarios, (result, value, key) => {
      if (exceptIndex !== key && isNumber(value.weight)) {
        result = result - value.weight;
        return result;
      } else {
        return result;
      }
    }, 100)

const connect = (opts) => {
 const auth = authorization(opts)
 const env = environment(opts.production)

 return reduce(resources, (result, resource, key) => {
  result[key] = looper(result, resource, {auth, env})
  return result
 }, {})
}

constructor(handlers = {}) {
    super();
    this.handlers = {};
    if (isObject(handlers)) {
      this.handlers = reduce(handlers, (carry, Handler, key) => {
        carry[key] = isFunction(Handler) ? new Handler() : Handler; // eslint-disable-line
        return carry;
      }, {});
    }
  }

const toErrors = errors =>
 reduce(
  errors.inner,
  (result, error) => {
   return { ...result, [error.path]: error.message };
  },
  {}
 )

export default function getMajorLanguage(languages) {
 const sumLinesOfCode = reduce((sum, linesOfCode) => sum + linesOfCode, 0)(
  languages,
 )

 const highUsageLanguages = flow(
  pickBy((value, key) => (value > 10000 ? key : null)),
  keys,
 )(languages)

 const mostPopularLanguage = flow(
  mapValues((value, key) => value / sumLinesOfCode),
  obj => [keys(obj).reduce((a, b) => (obj[a] > obj[b] ? a : b), null)],
  filter(value => value),
 )(languages)

 return union([...highUsageLanguages, ...mostPopularLanguage])
}

const looper = (result, resource, authObject) => reduce(resource, (result, func, key) => {
 result[key] = isFunction(func) ? binder(func, authObject) : looper(result, func, authObject)
 return result
}, {})

/**
 * Generate array of docker pull promises and wait until resolved to return merged output streams
 * TODO: this function should be depricated for pullImagesFromList,
 *  as it couples too closely w/ the UI
 * @param {Object[]} comps array of computation objects to download
 * @param {String} comps.img Docker image name
 * @param {String} comp.compId Computation ID from app DB
 * @param {String} comp.compName Computation name from DB
 * @return {Object} Returns array of objects containing stream and computation parameters
 */
const pullImages = (comps) => {
 const compsP = reduce(comps, (arr, comp) => {
  arr.push(pullImage(`${comp.img}:latest`));
  return arr;
 }, []);

 // Set promise catches to undefined so that failures can be handled as successes: https://davidwalsh.name/promises-results
 return Promise.all(compsP.map(prom => prom.catch(err => err)))
  .then((res) => {
   return comps.map((val, index) => ({
    stream: res[index],
    compId: val.compId,
    compName: val.compName,
   }));
  });
}

reduce(languages, (result, language) => {
 const obj = result;
 obj[language] = requireTranslations(language);
 addLanguageLocaleData(language);
 return obj;
}, {})

const all = (tree, collection) => reduce(collection, (result, item) => result && run(tree, item), true)

const appendImports = ({ fileNamesToInclude, source, alias }) =>
 reduce(
  fileNamesToInclude,
  (existingImports, fileNameToInclude) => {
   return `${existingImports}\n @import "${alias}/${fileNameToInclude}.less";`;
  },
  source,
 )

const and = elems => reduce(elems, (a, e) => a && e, true)

const any = (tree, collection) => reduce(collection, (result, item) => result || run(tree, item), false)

const any = (tree, collection) => reduce(collection, (result, item) => result || run(tree, item), false)

const all = (tree, collection) => reduce(collection, (result, item) => result && run(tree, item), true)

const and = elems => reduce(elems, (a, e) => a && e, true)