AshikNesin

import React from 'react'
import axios, { post } from 'axios';

class SimpleReactFileUpload extends React.Component {

  constructor(props) {
    super(props);
    this.state ={
      file:null
    }

MauricioMoraes

// Takes and array of arrays matrix and return an array of elements.
function flatten(arrayOfArrays){
  return [].concat.apply([], arrayOfArrays);
}

bahelms

require "csv"

def csv_headers
  ["Your", "Headers", "Here"]
end

files = Dir["file_names_*.csv"].sort_by { |f| "if you want to sort the files" }
file_contents = files.map { |f| CSV.read(f) }

csv_string = CSV.generate do |csv|

jordan-thoms

require 'csv'
require 'json'
require "set"

json = JSON.parse(File.open(ARGV[0]).read)["results"]
# Pass 1: Collect headings
headings = SortedSet.new
json.each do |hash|
  headings.merge(hash.keys)
end