`sys.puts` simply prints the given string in the logs.

But if you want to print a more complex object (Array, JSON, JSObject) you have to use `console.log` because you want to &quot;look inside&quot; of the object.

`sys.puts` would give you only &quot;[object object]&quot; for example.

Both just write to the stdout stream.  The difference is that `sys.puts` just `toString`&#39;s the first argument, and `console.log` takes multiple arguments, and will `sys.inspect` the first arg if it&#39;s not a string.

Puts is deprecated in since version 0.2.3

Also you can use console.log without requiring the sys module.

    console.dir(objectToInspect)

This might be another way to inspect objects.


    sys.puts([...]);

Is a synchronous output function. Simply it is a blocking function as in Node.js language.

    console.log([data], [...]);

Prints to stdout with newline.

For more Info:

[http://nodejs.org/api/stdio.html#stdio_console_log_data][1]

[http://nodejs.org/api/util.html#util_util_puts][2]

**Note: &#39;sys&#39; module was renamed to be &#39;util&#39; (Supported by [link][3]) It was a Fix #3577**


  [1]: http://nodejs.org/api/stdio.html#stdio_console_log_data
  [2]: http://nodejs.org/api/util.html#util_util_puts
  [3]: https://github.com/joyent/node/blob/master/lib/sys.js

The preferred method is `console.log()`. `sys.puts()` has been removed.

---

The `sys` module was renamed `util` with this [commit][1] dated Oct 12, 2010. So `sys.puts()` became `util.puts()`. `util.puts()` was added in v0.3.0, deprecation since v0.11.3, and removed in v12.0.0. The [documentation][2] advises to use `console.log()` instead.


  [1]: https://github.com/nodejs/node-v0.x-archive/commit/e38eb0c5a4d4e8497f5815be81994ddb01fbceb7#diff-23937c0fc3badcf29d5d29c4721906d3a79b981359a7b3f383a21c9d3a5d7478
  [2]: https://nodejs.org/docs/latest-v15.x/api/all.html#DEP0027

Can anyone please explain me what does `@class` declaration do in Objective-C and what are the cases in which we should use this declaration?

What does @class do in Objective-C?

In class we&#39;re now learning how to build up a Spring application, even though spring isn&#39;t directly involved, we learned how to make the interfaces for DAO and service layer objects. 

Please correct me if I&#39;m wrong:
DAO layer is pretty abstract: it just contains the CRUD operations and is further used to read data.(ie: get all objects, get specific objects, etc)

Service layer: contains services to create things, and delete things, this is where business logic should be. 

Now all of this makes sense in the service layer; except &quot;updating&quot; objects. Do you just put a &quot;update&quot; function that just saves the object in your database? Or do you need to define the logic there as well? This is where my confusion is as, my understanding is objects in Spring are just POJO&#39;s. Now then who validates the data? 

Let&#39;s say I have an Object &quot;child&quot;
it has:`Name`, `SurName`, `Gender`, `Photo`, `Birthdate`
fields.
how would I name the services? Or would you just let the controller take care of validation, which doesn&#39;t seem right to me. On the other hand it wouldn&#39;t seem right either to delegate every setter that needs to be called to the service layer.

So just basically: help me with how to define saving your objects via the service layer.

Service layer and controller: who takes care of what?

In node.js you can use `console.log` or `sys.puts` to print out to the screen.

What is the preferred method and what is the difference between these?

Difference between console.log and sys.puts in node.js?

<p>In node.js you can use <code>console.log</code> or <code>sys.puts</code> to print out to the screen.</p>
<p>What is the preferred method and what is the difference between these?</p>


Is there any way to use the `onclick` html attribute to call more than one JavaScript function?

How to call multiple JavaScript functions in onclick event?

How can I format/tidy/beautify HTML in JavaScript? [I have tried doing a search/replace for angle brackets (`&lt;`, `&gt;`) and indenting accordingly.][1] But of course it does not take into account when the is JS or CSS etc inside the HTML.

The reason I want to do this is I have made a content editor (CMS) which has both WYSIWYG and source code views. The problem the code written by the WYSIWYG editor is normally a single line. So I would like a JavaScript that could format this into a more readable form on demand.

Here what I have so far:

    function getIndent(level) {
        var result = &#39;&#39;,
            i = level * 4;
        if (level &lt; 0) {
            throw &quot;Level is below 0&quot;;
        }
        while (i--) {
            result += &#39; &#39;;
        }
        return result;
    }
    
    function style_html(html) {
        html = html.trim();
        var result = &#39;&#39;,
            indentLevel = 0,
            tokens = html.split(/&lt;/);
        for (var i = 0, l = tokens.length; i &lt; l; i++) {
            var parts = tokens[i].split(/&gt;/);
            if (parts.length === 2) {
                if (tokens[i][0] === &#39;/&#39;) {
                    indentLevel--;
                }
                result += getIndent(indentLevel);
                if (tokens[i][0] !== &#39;/&#39;) {
                    indentLevel++;
                }
    
                if (i &gt; 0) {
                    result += &#39;&lt;&#39;;
                }
    
                result += parts[0].trim() + &quot;&gt;\n&quot;;
                if (parts[1].trim() !== &#39;&#39;) {
                    result += getIndent(indentLevel) + parts[1].trim().replace(/\s+/g, &#39; &#39;) + &quot;\n&quot;;
                }
    
                if (parts[0].match(/^(img|hr|br)/)) {
                    indentLevel--;
                }
            } else {
                result += getIndent(indentLevel) + parts[0] + &quot;\n&quot;;
            }
        }
        return result;
    }

  [1]: https://github.com/PANmedia/raptor-dependencies/blob/master/beautify-html.js

How to format/tidy/beautify in JavaScript

I&#39;ve tried the following with no success:

    function a(args){
        b(arguments);
    }
    
    function b(args){
        // arguments are lost?
    }
    
    a(1,2,3);

In function a, I can use the arguments keyword to access an array of arguments, in function b these are lost. Is there a way of passing arguments to another javascript function like I try to do?

Passing arguments forward to another javascript function

I&#39;m not sure if this is even possible. But I was wondering if anyone knows how to make a hyperlink pass some variables and use POST (like a form) as opposed to GET.



Make a link use POST instead of GET

I&#39;m playing with the idea of making a completely JavaScript-based zip/unzip utility that anyone can access from a browser. They can just drag their zip directly into the browser and it&#39;ll let them download all the files within. They can also create new zip files by dragging individual files in.

I know it&#39;d be better to do it serverside, but this project is just for a bit of fun.

Dragging files into the browser should be easy enough if I take advantage of the various methods available. (Gmail style)

Encoding/decoding should hopefully be fine. I&#39;ve seen some as3 zip libraries so I&#39;m sure I should be fine with that.

My issue is downloading the files at the end.

    window.location = &#39;data:jpg/image;base64,/9j/4AAQSkZJR....&#39; 

this works fine in Firefox but not in Chrome. 

I can embed the files as images just fine in chrome using `&lt;img src=&quot;data:jpg/image;ba..&quot; /&gt;`, but the files won&#39;t necessarily be images. They could be any format.

Can anyone think of another solution or some kind of workaround?

Download data URL file

I would like to see test results ( system.out/err, log messages from components being tested ) _as they run_ in the same console I run:

    gradle test

And not wait until tests are done to look at the test reports ( that are only generated when tests are completed, so I can&#39;t &quot;tail -f&quot; anything while tests are running )

Gradle: How to Display Test Results in the Console in Real Time?

I was trying to create a simple console application to try out Qt&#39;s XML parser. I started a project in VS2008 and got this template:

    int main(int argc, char *argv[])
    {
        QCoreApplication a(argc, argv);

        return a.exec();
    }

Since I don&#39;t need event processing, I was wondering whether I may get into trouble if I neglect to create a QCoreApplication and running the event loop. The docs state that it&#39;s recommended in most cases.

For the sake of curiosity however, I am wondering how could I make some generic task execute on the event loop and then terminate the application. I was unable to google a relevant example.

How do I create a simple Qt console application in C++?

I was using `readLine` of `BufferedReader` to get input/new password from user, but wanted to mask the password so I am trying to use `java.io.Console` class. Problem is that `System.console()` returns `null` when an application is debugged in Eclipse. I am new to Java and Eclipse not sure is this the best way to achieve? I am right clicking on the source file and selecting &quot;Debug As&quot; &gt; &quot;Java Application&quot;. Is there any workaround?

System.console() returns null

Is it possible write a string or log into the console?

## What I mean

Just like in JSP, if we print something like `system.out.println(&quot;some&quot;)`, it will be there at the console, not at a page.


How can I write to the console in PHP?

What is the command or the quickest way to output results to console using vbscript?

vbscript output to console

As per title, how do I do that?

Here is my code: 

    var http = require(&#39;http&#39;);

    // to access this url I need to put basic auth.
    var client = http.createClient(80, &#39;www.example.com&#39;);
    
    var request = client.request(&#39;GET&#39;, &#39;/&#39;, {
        &#39;host&#39;: &#39;www.example.com&#39;
    });
    request.end();
    request.on(&#39;response&#39;, function (response) {
      console.log(&#39;STATUS: &#39; + response.statusCode);
      console.log(&#39;HEADERS: &#39; + JSON.stringify(response.headers));
      response.setEncoding(&#39;utf8&#39;);
      response.on(&#39;data&#39;, function (chunk) {
        console.log(&#39;BODY: &#39; + chunk);
      });
    });

How to use http.client in Node.js if there is basic authorization

Here are 2 files:

    // main.js
    require(&#39;./modules&#39;);
    console.log(name); // prints &quot;foobar&quot;

    // module.js
    name = &quot;foobar&quot;;

When I don&#39;t have &quot;var&quot; it works. But when I have:


    // module.js
    var name = &quot;foobar&quot;;

name will be undefined in main.js.

I have heard that global variables are bad and you better use &quot;var&quot; before the references. But is this a case where global variables are good?

Share variables between files in Node.js?

I&#39;ve been experimenting with binary streams in Node.js, and much to my amazement do actually have a working demo of taking a Shoutcast stream using node-radio-stream and pushing it into a HTML5 &lt;audio&gt; element using chunked encoding. But it only works in Safari!

Here is my server code:

    var radio = require(&quot;radio-stream&quot;);
    var http = require(&#39;http&#39;);
    var url = &quot;http://67.205.85.183:7714&quot;;
    var stream = radio.createReadStream(url);

    var clients = [];

    stream.on(&quot;connect&quot;, function() {
      console.error(&quot;Radio Stream connected!&quot;);
      console.error(stream.headers);
    });


    // When a chunk of data is received on the stream, push it to all connected clients
    stream.on(&quot;data&quot;, function (chunk) {
        if (clients.length &gt; 0){
            for (client in clients){
                clients[client].write(chunk);
            };
        }
    });

    // When a &#39;metadata&#39; event happens, usually a new song is starting.
    stream.on(&quot;metadata&quot;, function(title) {
      console.error(title);
    });

    // Listen on a web port and respond with a chunked response header. 
    var server = http.createServer(function(req, res){ 
        res.writeHead(200,{
            &quot;Content-Type&quot;: &quot;audio/mpeg&quot;,
            &#39;Transfer-Encoding&#39;: &#39;chunked&#39;
        });
        // Add the response to the clients array to receive streaming
        clients.push(res);
        console.log(&#39;Client connected; streaming&#39;); 
    });
    server.listen(&quot;8000&quot;, &quot;127.0.0.1&quot;);

    console.log(&#39;Server running at http://127.0.0.1:8000&#39;); 

My client code is simply:

    &lt;audio controls src=&quot;http://localhost:8000/&quot;&gt;&lt;/audio&gt;

This works fine in Safari 5 on the Mac, but doesn&#39;t seem to do anything in Chrome or Firefox. Any ideas? 

Possible candidates including encoding issues, or just partially-implemented HTML5 features...

Streaming audio from a Node.js server to HTML5 &lt;audio&gt; tag

Since this post has gotten a lot of attention over the years, I&#39;ve listed the top solutions per platform at the bottom of this post.

---

**Original post**:

I want my node.js server to run in the background, i.e.: when I close my terminal I want my server to keep running. I&#39;ve googled this and came up with this [tutorial][1], however it doesn&#39;t work as intended. So instead of using that daemon script, I thought I just used the output redirection (the `2&gt;&amp;1 &gt;&gt; file` part), but this too does not exit - I get a blank line in my terminal, like it&#39;s waiting for output/errors.

I&#39;ve also tried to put the process in the background, but as soon as I close my terminal the process is killed as well.

So how can I leave it running when I shut down my local computer?

---

**Top solutions**:

* [Systemd](https://stackoverflow.com/a/29042953/339122) (Linux)
* [Launchd](https://stackoverflow.com/a/25998406/339122) (Mac)
* [node-windows](https://stackoverflow.com/a/15616912/339122) (Windows)
* [PM2](https://stackoverflow.com/a/17005935/339122) (Node.js)

[1]: http://kevin.vanzonneveld.net/techblog/article/run_nodejs_as_a_service_on_ubuntu_karmic/


How do I run a node.js app as a background service?

How do I get a node.js server to redirect users to a 404.html page when they enter an invalid url?

I did some searching, and it looks like most results are for Express, but I want to write my server in pure node.js.

Content Type	Original Author	Original Content on Stackoverflow
Question	never_had_a_name	View Question on Stackoverflow
Solution 1 - Javascript	Elias	View Answer on Stackoverflow
Solution 2 - Javascript	isaacs	View Answer on Stackoverflow
Solution 3 - Javascript	angry kiwi	View Answer on Stackoverflow
Solution 4 - Javascript	daralthus	View Answer on Stackoverflow
Solution 5 - Javascript	Rajkamal Subramanian	View Answer on Stackoverflow
Solution 6 - Javascript	Amol M Kulkarni	View Answer on Stackoverflow
Solution 7 - Javascript	d4nyll	View Answer on Stackoverflow

Difference between console.log and sys.puts in node.js?

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Solution 2 - Javascript

Solution 3 - Javascript

Solution 4 - Javascript

Solution 5 - Javascript

Solution 6 - Javascript

Solution 7 - Javascript

Service layer and controller: who takes care of what?

What does @class do in Objective-C?

Attributions