async.map(arr, function(item, callback){},callback(err, results){});async.mapSeries
app.get('/testMap',function(req, res){
var arr = [0,1,2,3,4,5,6];
async.mapSeries(arr,function(item, callback){
(function(){
callback(null, item+1);
}());
},function(err, results){
console.log(results);//[1,2,3,4,5,6,7];
});
});
app.get('/testSeries',function(req, res){
async.series([
function(callback){
callback(null,'function1');
},function(callback){
callback(null, 'function2')
},function(callback){
callback(null, 'function3');
}],function(err, results){
console.log(results);//['function1','function2','function3'];
});
});
tasks: functionList;
callback: function(err, result){}
app.get('/testParallel',function(req, res){
async.parallel([
function(callback){
callback(null,'function1');
},function(callback){
callback(null, 'function2')
},function(callback){
callback(null, 'function3');
}],function(err, results){
console.log(results);//['function1','function2','function3'];
});
});
app.get('/testWhilst',function(req, res){
var count = 0;
async.whilst(function(){
if(count < 3) return true;
},function(callback){
(function(){
count++;
callback(null);
}());
},function(err){
console.log(count);//3
});
});
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