I have hard time understand nimble, and here are two questions:
1 -- I have a tiny test code below, almost direct copy from nimble's online tutorial. I didn't use any complicated asyn functions in there but just use a console.log for simplicity reasons.
var nimble = require('nimble');
nimble.series([
function(cb) {
console.log("first");
cb();
},
function(cb) {
console.log("second");
cb();
}
]);
It works as promised, but what's the point of the callback (cb)? From the code I seem never pass anything as cb to either function in the series.
Then I tried the modified version of the code. Basically, it deletes all callbacks.
var nimble = require('nimble');
nimble.series([
function() {
console.log("first");
},
function() {
console.log("second");
}
]);
It is sadly only output "first" but no "second", so it's wrong somewhere, not sure why. Now I am quite confused what that callback actually is and why we have to have it.
2 -- From nimble's tutorial, one seems to be able to use underscore (_) conveniently. I tried the following code, which is directly copied online, but I was just told the _ was not defined..
var nimble = require('nimble');
_.series([
function (callback) {
setTimeout(function () {
console.log('one');
callback();
}, 25);
},
function (callback) {
setTimeout(function () {
console.log('two');
callback();
}, 0);
}
]);
Probably I got something wrong. Should I import the underscore.js before I can use _ in nimble? But nimble says one of its selling points is that it is small, no need to import async and underscore. Then here I got confused again..