util/async.js
function(fns, done) {
    done = done || function() {};
    this.map(fns, function(fn, callback) {
      fn(callback);
    }, done);
  }
function(fns, done) {
    done = done || function() {};
    this.map(fns, function(fn, callback) {
      fn(callback);
    }, done);
  }
function ( fns , done ) { done = done || function ( ) { } ; this . map ( fns , function ( fn , callback ) { fn ( callback ) ; } , done ) ; }
Works the same as async.parallel
Works the same as async . parallel