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const dollarFormat = (amount, defaultValue) => {
  console.log(amount)
  if (!amount)
    return defaultValue;
    
  const result = `${parseFloat(amount).toFixed(2)}`.replace(/\B(?=(\d{3})+(?!\d))/g, ',');
  console.log(result)
  if (isNaN(result)) 
    return defaultValue
  else 

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const dollarFormat = (amount, defaultValue) => {
  console.log(amount)
  if (!amount)
    return defaultValue;
    
  const result = `${parseFloat(amount).toFixed(2)}`.replace(/\B(?=(\d{3})+(?!\d))/g, ',');
  console.log(result)
  if (isNaN(result)) 
    return defaultValue
  else 

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const uniqSort = function(arr) {
  const memo = {[arr[0]] : true};
  const result = [arr[0]];

  for (let i = 1; i < arr.length; i++) {
    if (!memo[arr[i]]) {
      result.push(arr[i]); 
      memo[arr[i]] = true; 
    }
  }

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vs Questions

---

1. http://stackoverflow.com/questions/804115 (rebase vs merge).
2. https://www.atlassian.com/git/tutorials/merging-vs-rebasing (rebase vs merge)
3. https://www.atlassian.com/git/tutorials/undoing-changes/ (reset vs checkout vs revert)
4. http://stackoverflow.com/questions/2221658 (HEAD^ vs HEAD~) (See git rev-parse)
5. http://stackoverflow.com/questions/292357 (pull vs fetch)
6. http://stackoverflow.com/questions/39651 (stash vs branch)
7. http://stackoverflow.com/questions/8358035 (reset vs checkout vs revert)
8. http://stackoverflow.com/questions/5798930 (git reset vs git rm --cached)

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// Promise.all is good for executing many promises at once
Promise.all([
  promise1,
  promise2
]);

// Promise.resolve is good for wrapping synchronous code
Promise.resolve().then(function () {
  if (somethingIsNotRight()) {
    throw new Error("I will be rejected asynchronously!");

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This guide assumes that you recently run brew upgrade postgresql and discovered to your dismay that you accidentally bumped from one major version to another: say 9.3.x to 9.4.x. Yes, that is a major version bump in PG land.

First let's check something.

brew info postgresql

The top of what gets printed as a result is the most important: