function as unit of abstraction

by Rich Costello

JavaScript

function parse(Age) {
	if (!_.isString(age)) throw new Error("Expecting a string");
  var a;
  
  console.log("Attempting to parse and age");
  
  a = parseInt(age, 10);
  
  if (_.isNaN(a)) {
  	console.log(["Could not parse age:", age].join('')); a = 0;
  }
  return a;
}

parseAge("35");

parseAge(35)

parseAge("from");