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// Common pattern of wrapping a library async function in a promise
function retriesAsyncOperation (args, retriesLeft = 5) {
  return new Promise((resolve, reject) => {
    performAsyncOp(args)
      .then(result => resolve(result)
      .catch((error) => {
        if (retriesLeft == 0) {
          reject(error)
        } else {
          // Passing reject as second argument allows outermost promise to fail when retries run out

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diff --git a/backend/package.json b/backend/package.json
index d0b2711..b731869 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -16,6 +16,7 @@
   "author": "Vincent Ning",
   "license": "ISC",
   "dependencies": {
+    "cors": "^2.8.5",
     "express": "^4.16.4",

jcuffe

$(document).ready(function(e){
    //commID = getCommunity();
    commID = "ACH";
    var campusArray = ilHeadshots.filter(function(item){
        return item.community == commID;
    });

    console.log(ilHeadshots);
    console.log("");
    console.log(campusArray);

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import React from "react";
import axios from "axios";
import Export from "./Export";
import Login from "./Login";

class App extends React.Component {
  state = {
    user: null
  };

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//
// Cache the response of an axios request
//

const cacheRequest = request => {
  let cache = null;
  return () => {
    cache = cache || request.then(({ data }) => data);
    return cache;
  };

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const ordersEpic = (action$, state$) => action$.pipe(
  // Listen for this action
  ofType(type.GET_ORDERS), 

  // Replace the action with the list of active IDs
  mapTo(state$.value.market.ids), 

  // Turn the list into a stream of ids
  flatMap(from), 

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const express = require('express');
const axios = require('axios');
const endpoints = require('./endpoints');
const knex = require('knex')({
  client: 'sqlite3',
  connection: {
    filename: "./sde.sqlite"
  }
});

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diff --git a/hash-tables/ex1/ex1.py b/hash-tables/ex1/ex1.py
index 3039cf3..e7e289d 100644
--- a/hash-tables/ex1/ex1.py
+++ b/hash-tables/ex1/ex1.py
@@ -1,14 +1,14 @@
 def get_indices_of_item_weights(weights, limit):

-  hash_table = { i : weights[i] for i in range(0, len(weights) ) }
-  hash_table2 = {y:x for x,y in hash_table.items()}
+  hash_table = { weights[i] : i for i in range(len(weights)) }

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diff --git a/hash-tables/ex1/ex1.py b/hash-tables/ex1/ex1.py
index 3039cf3..e7e289d 100644
--- a/hash-tables/ex1/ex1.py
+++ b/hash-tables/ex1/ex1.py
@@ -1,14 +1,14 @@
 def get_indices_of_item_weights(weights, limit):

-  hash_table = { i : weights[i] for i in range(0, len(weights) ) }
-  hash_table2 = {y:x for x,y in hash_table.items()}
+  hash_table = { weights[i] : i for i in range(len(weights)) }

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const typeDefs = `
  type Query {
    hello: String
  }
`;

const resolvers = {
  Query: {
    hello: () => "Hello, world!"
  }