benjaminparnell

// service file

export const createStockLevelChecker = (serviceLocator) => {
  return async (offerId) => {
    const offer = await serviceLocator.offerService.read(offerId);

    if (offer) {
      return "there is stock";
    }

benjaminparnell

// This example allows:
// 
// `age` to be zero as a valid initial value, or any other number. If its undefined the input
// will be empty instead of zero.
// 
// `value` to be undefined, leaving please select as selected, or preset to any other number
// including zero.
// 
// It also makes use of yup's schema.cast (post submit) to get around select values
// coming out as strings. This is better than manually having to catch these cases

benjaminparnell

import * as React from "react";
import { render } from "react-dom";
import {
  Formik,
  FieldArray,
  Field,
  Form,
  FormikProps,
  ArrayHelpers
} from "formik";

benjaminparnell

var moment = require('moment-timezone')
  , prevAbbr = moment.fn.zoneAbbr
  , timezoneTranslations = {
      'Europe/Istanbul': 'TSİ'
    }

moment.fn.zoneAbbr = function () {
  var customTimezoneTranslation = timezoneTranslations[this._z.name]
  return customTimezoneTranslation || prevAbbr.call(this)
}

benjaminparnell

var mlcm = require('mlcm')
  , frac = require('frac')

module.exports = function  getMultiplier (prizes) {
  if (prizes.length === 0) return 0
  if (Array.isArray(prizes) === false) throw new Error('getMultiplier requires an array')

  return mlcm(prizes.map(function (prize) {
    return frac(prize.chance, Infinity)[2]
  }))

benjaminparnell

people.sort(function (a, b) {
  return a.name > b.name
})

benjaminparnell

function map (arr, fn, ctx = this) {
  return Promise.all(arr.map((item, index) => {
    return new Promise((resolve, reject) => {
      fn.call(ctx, item, index, arr, resolve, reject)
    })
  }))
}

var arr = [1, 2, 3]

benjaminparnell

git config --global user.name "YOUR REAL NAME ON GITHUB"
git config --global user.email youremail@gmail.com
git remote remove origin
git remote add origin git@github.com:yourusername/yourrepo
git push -u origin master

benjaminparnell

#include <iostream>
#include <vector>

class Shape {
  public:
    virtual void print() = 0;
};

class Square : public Shape {
  virtual void print() {

benjaminparnell

struct NotCopyable {
  // defaulted and deleted funtions are only available in C++11
  NotCopyable(const NotCopyable&) = delete;

  // Overriding the = operator so you can't copy one NotCopyable to another
  // one
  NotCopyable& operator=(const NotCopyable&) = delete;

  // You would need the following line to be able to construct an instance of this
  // struct at all