Some Functional Utility Functions from http://randycoulman.com/blog/categories/thinking-in-ramda/

ramda_tutorial.js

/*
  Partial Application
*/





/*
  Combine functions
*/
const either = (...args) => (...dataArgs) => {
  let result = false;
  let i = 0;
  while ( i < args.length) {
    if (args[i].apply(null, dataArgs)) {
      result = true;
      break;
    }
    i++;
  }
  return result;
};

const both = (...args) => (...dataArgs) => {
  let result = true;
  let i = 0;
  while ( i < args.length) {
    if (!args[i].apply(null, dataArgs)) {
      result = false;
      break;
    }
    i++;
  }
  return result;
};

const compose = (...args) => (...objArgs) => {
  if (!args || !args.length) return objArgs;
  if (args.length === 1) {
    return args[0].apply(null, objArgs);
  }
  const tail = args.slice(-1)[0];
  const rest = args.slice(0, -1);
  return compose.apply(null, rest)(tail.apply(null, objArgs));
}