Online IDE - C/C++, Java, PHP, Python, Perl and 40+ compilers and intepreters | Hacker News Reader

Online IDE - C/C++, Java, PHP, Python, Perl and 40+ compilers and intepreters

ideone.com

79 pointsnecenzurat28 comments

Competition is good and all that, but from my vantage point it seems like a slow-loading and ad-ridden version of codepad.org: http://codepad.org/

Edit: That said, ideone does have an API.

Yeah, the ad-ridden part bothers me the most. I immediately closed the window once I saw the page plastered with ads without even trying it out to see if it was any good. That's just not something I'd ever want to use.

Adblock does a good job of removing ads here:

http://i.imgur.com/YO7bt.png

A tool like this isn't the place for an ad-supported model. This is a place to work with text, and the colorful, animated, image-based ads are simply too distracting to do any real work for more than a minute or two.

This also handles the tab key properly whereas codepad (currently) does not.

Wow, I haven't tried either but not using the tab key in a code editer is kind of silly.

Beside API, after registration at Ideone you can tag your codes (quite flexible, I guess), switch off ads + some more features.

I tried to run this:

public class Foo { public static void main(String[] args) { System.out.println("foo"); } }

And got an error "class Foo should be in a file named Foo.java". Sweet!

Syntax highlighting doesn't seem to do anything. Isn't it a little grand to be calling this an IDE?

Don't specify the class as public. Then you can name it whatever you want.

If you name the class 'Main' it works fine.

They have an "insert template" button which kind of clarifies that.

This is pretty cool.

It's always good to try out new languages but it can be time consuming getting things up & running before you can make your "hello world".

I wrote my first Go program just now, might try Prolog next :)

It has a bash interpreter. My first thought was "I wonder if anyone's tried fork bombing it" (no, I have not and will not try, that would be rude).

I assumed they'd handle this and tried it. From the FAQ: up to 16 processes can be created, maximum execution time is 5 seconds.

http://ideone.com/F3GBH shows the output from a fork bomb. Basically nothing goes wrong, as I'd expect.

Yes, that was the first thing I tried :) - and no, I just got "maximum execution time reached"

Edit: though, I attempted fork bomb in C ...

I fork bombed it. This is the output:

    result: time limit exceeded	     time: ∞    memory: 2720 kB     signal: 9 (SIGKILL)

After reading about a bug where, in C, a comment line ended with a backslash leading next line to be commented to, I tried it in your ide and the syntax highlighting does not reflect this. (details of the bug here : http://news.ycombinator.com/item?id=2919511)

The output page does look pretty interesting, specially for debugging code collaboratively as one can share the output URL. The page contains execution time, errors and the code, very well arranged.

That said, 'print 5' in python took 11 seconds.

Yes, collaborative debugging might be the case to use ideone. You might for example want to provide the input data to someones code to show up bugs in it.

How does this differ from Codepad, which has been around a while? http://codepad.org/

Edit: The ability to use the tab key is pretty awesome.

Codepad doesn't have Java.

One advantage of this is that you can pipe in input. I don't think codepad allows that.

Slow, doesn't compile, syntax highlighting doesn't work. Better luck next time!

I chose C# and it doesn't compile this:

var s = "Hello World!";

Perhaps because it compiles programs and not expressions? Try wrapping it in a Main method and see.

Please use "insert template" and "insert sample" to start with working code.

couldn't get a Scala hello world running, was exasperated by the slow response, ran away

Sad to see the "recent code" mostly shows a bunch of "Hello, world!" and no one trying to push the limits.

You can adapt some of the benchmark programs from http://shootout.alioth.debian.org/ I can not see it being used for much except trying a new language or a benchmark.

The compilation performance reminds me of the 'beloved' time sharing systems of the eighties and earlier. Had to go to work in the middle of the night, so compilations didn't take an unpredictably long time. With PC's (CP/M-80, XENIX) came more predictable performance. Feels like a history repeat - going back to the terminal age with HTML forms somewhat like 3270 submit and AJAX more like DEC VT-100. Not exactly of course, but like a pendulum swinging from server-side to client-side and now back to server-side.

It's not sad. As a new service, people are going to check to see if it works at all before spending time doing something more complex.

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