C++ code into Ruby, I need it fast, no time for RTFM

Leslie Viljoen · Apr 26, 2007

Have you gotten a suitable answer yet?

There are several options for you here.
1) Transliterate into Ruby (as you imply)
2) Leave your code as-is and wrapper it using Ruby's C api
3) Leave your code as-is and use the Ruby DL module to load your
library and invoke the methods
4) Use the RubyInline module to simply "inline" your C/C++ code into a
Ruby program

Just tried RubyInline - amazing!
I had one GCC hiccough on my Ubuntu 6 system, I had to do this:

ln -s /usr/lib/gcc/x86_64-linux-gnu/4.0.3/cc1 /usr/bin/cc1plus

..to get GCC to recognise that G++ had been installed. Otherwise it
gave me this:
gcc: installation problem, cannot exec `cc1plus': No such file or directory

Robert Klemme · Apr 26, 2007

Though that one's for people of alternative brain.

Um, what do you mean by *that*? I have just one brain - am I old fashioned?

SCNR

robert

bpfurtado · Apr 26, 2007

Have you gotten a suitable answer yet?

There are several options for you here.
1) Transliterate into Ruby (as you imply)
2) Leave your code as-is and wrapper it using Ruby's C api
3) Leave your code as-is and use the Ruby DL module to load your
library and invoke the methods
4) Use the RubyInline module to simply "inline" your C/C++ code into a
Ruby program

By far the quickest solution is going to be the RubyInline route.
You'll need a compiler installed on your machine to handle the C++
code compilation step RubyInline performs. You can install RubyInline
via the gem command:

gem install -r rubyinline

Shoot a nice note of thanks off to Eric Hodel and Ryan Davis. They've
done a great job with that little gem.

Have fun learning Ruby! I've learned far more about programming by
using Ruby than I ever learned using C/C++ or Java.

You can´t blame C/C++ or Java or any programming language for your
learning skills.

--
"Minds are like parachutes, they work best when open."
"I know nothing except the fact of my ignorance."
Bruno Patini Furtado
Software Developer
text adventures suite: http://bpfurtado.net/tas
software development blog: http://bpfurtado.livejournal.com
Ruby related topics: http://bpfurtado.livejournal.com/tag/ruby

Michael T. Richter · Apr 26, 2007

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There are still ways to ask for things.

And those ways vary by culture. Andrei is painfully obviously not a
native English speaker. Cut the guy some slack. What happened to the
whole "Matz Is Nice So...." meme that supposedly dominates this
community?

--=20
Michael T. Richter <[email protected]> (GoogleTalk:
(e-mail address removed))
A well-designed and humane interface does not need to be split into
beginner and expert subsystems. (Jef Raskin)

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On Wed, 2007-25-04 at 21:12 +0900, David Jones wrote:
<BLOCKQUOTE TYPE=3DCITE>
<PRE>
There are still ways to ask for things.
</PRE>
</BLOCKQUOTE>
 
And those ways vary by culture.  Andrei is painfully obviously not a n=
ative English speaker.  Cut the guy some slack.  What happened to=
the whole "Matz Is Nice So...." meme that supposedly dominates t=
his community? 
 
<TABLE CELLSPACING=3D"0" CELLPADDING=3D"0" WIDTH=3D"100%">
<TR>
<TD>
-- 
Michael T. Richter <<A HREF=3D"mailto:[email protected]">ttmri=
(e-mail address removed)</A>> (GoogleTalk: (e-mail address removed)) 
A well-designed and humane interface does not need to be split into begi=
nner and expert subsystems. (Jef Raskin)
</TD>
</TR>
</TABLE>
</BODY>
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Andrei Ursan · Apr 26, 2007

Thanks all of you for the links and support.
It's realy amazing and funny what you can do with Ruby.

Tim Pease · Apr 26, 2007

Just tried RubyInline - amazing!
I had one GCC hiccough on my Ubuntu 6 system, I had to do this:

ln -s /usr/lib/gcc/x86_64-linux-gnu/4.0.3/cc1 /usr/bin/cc1plus

..to get GCC to recognise that G++ had been installed. Otherwise it
gave me this:
gcc: installation problem, cannot exec `cc1plus': No such file or directory

The magic behind RubyInline is the rbconfig.rb file. This little Ruby
script contains the build environment used to compile the Ruby
interpreter for your particular platform. When RubyInline compiles
code, it uses the build environment found in rbconfig.rb.

So, the catch is that your machine environment
(compilers/libraries/etc) needs to agree with what is in rbconfig.rb.

For my Ruby/Cywin installation, rbconfig.rb can be found here ...

/usr/lib/ruby/1.8/i386-cygwin/rbconfig.rb

Blessings,
TwP

Leslie Viljoen · Apr 26, 2007

The magic behind RubyInline is the rbconfig.rb file. This little Ruby
script contains the build environment used to compile the Ruby
interpreter for your particular platform. When RubyInline compiles
code, it uses the build environment found in rbconfig.rb.

So, the catch is that your machine environment
(compilers/libraries/etc) needs to agree with what is in rbconfig.rb.

For my Ruby/Cywin installation, rbconfig.rb can be found here ...

/usr/lib/ruby/1.8/i386-cygwin/rbconfig.rb

Blessings,
TwP

Just installed the next Ubuntu, so I'll look at this. Thanks!

--=20
If you could create a machine that copies hamburgers =97 you put one
hamburger in and two equally good hamburgers come out the other side =97
it would be unethical not to do so and make it freely available.

Robert Dober · Apr 26, 2007

Um, what do you mean by *that*? I have just one brain - am I old fashioned?

It seems that one is above average

(at least if you take YHS as sample)

Leslie Viljoen · Apr 26, 2007

Um, what do you mean by *that*? I have just one brain - am I old fashioned?

Alternative as in abnormal. I just mean that the book is highly
strange, for people who appreciate strange. I really enjoyed it
myself.

Ah the scarf eaters... so wistful.

Leslie Viljoen · Apr 26, 2007

Just installed the next Ubuntu, so I'll look at this. Thanks!

It just worked on Feisty, so they must have fixed the GCC installation.
Looked at rbconfig though. Thanks for the tip.

Les

Dan Zwell · Apr 27, 2007

Leslie said:
Alternative as in abnormal. I just mean that the book is highly
strange, for people who appreciate strange. I really enjoyed it
myself.

Ah the scarf eaters... so wistful.

I probably would have loved _why's book, except I was so impatient to
learn ruby that I skipped over all the non-technical parts. It was
pretty informative, but its strange beauty was lost on a student that
pretty much wanted to learn Ruby in one night.

Robert Dober · Apr 27, 2007

I agree, this mailing list seems to be getting a lot more hostile towards
people new to ruby. Posting a link to google or how to ask questions, or
making a snide remark about how they format their messages is not going to
get people into ruby. I know if someone just posted a link to google with
nothing else if I asked a question about a new language, I would be turned
off from it, even if I could have asked it better.

Hmm are you not exaggerating a bit?
I was *very* amused that OP got answers at all!
Personally I feel that this is still a great community and that this
community should not stretch to be more popular at any cost.
I had pretty much preferred to ignore that post but others decided,
very honorably, to tell OP to change his attitude if he wants to
obtain something.
I think that your statement "could have asked it better" is the
euphemism of the month

.
Cheers
Robert

John Joyce · Apr 27, 2007

Hmm are you not exaggerating a bit?
I was *very* amused that OP got answers at all!
Personally I feel that this is still a great community and that this
community should not stretch to be more popular at any cost.
I had pretty much preferred to ignore that post but others decided,
very honorably, to tell OP to change his attitude if he wants to
obtain something.
I think that your statement "could have asked it better" is the
euphemism of the month .
Cheers
Robert

Not to harp on the issue, but had the same post gone to C or C++
mailing-list, it would've been flamed only with no solutions. The
beauty of the Ruby world is that (in the words of Masayoshi
Takahashi, of Ruby Kaigi) "Ruby is for lazy people" "java and c++ are
for diligent people". It means Ruby is fun and not painful like many
languages, so people actually enjoy responding to the list and trying
to make nice code!
The culture of those other languages tends to be the anal-retentive,
I'm-smarter-than-you, RTFM attitude.
In Ruby, RTFM is RTWFM, where W = wonderful. Unlike those other
languages, this stuff isn't terse and most of the books are good
ones. (Nothing is more annoying to me than being referred to K&R2,
one of the least accessible texts I've ever read, even though it does
have a wealth of good information in it.)

Philip Gatt · Apr 27, 2007

I'm a long time ruby user, but I just joined this list tonight. It's
disappointing to see drama already. I hope this is not the norm.

- Philip

John Joyce · Apr 27, 2007

NOT the norm!

Leslie Viljoen · Apr 27, 2007

I'm a long time ruby user, but I just joined this list tonight. It's
disappointing to see drama already. I hope this is not the norm.

- Philip

Everywhere where there are people together there will be conflict. On
the whole ruby-talk is the greatest forum I have been a part of.
"Drama" is extremely rare, mostly it's just a hundred questions a day
being answered with a thousand answers.

Also, some really great programmers regularly post here.

Robert Dober · Apr 27, 2007

I'm a long time ruby user, but I just joined this list tonight. It's
disappointing to see drama already. I hope this is not the norm.

Rare exception, search the archives a little bit if you have time, you
will see we are not lying to you, these things happen maybe 2 to 5
times a year...

Still I think this thread is not a problem and normally I am quite
sensible, but some folks are shocked and that is a pitty of course.

Welcome to the group!!

Cheers
Robert

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C++ code into Ruby, I need it fast, no time for RTFM

Leslie Viljoen

Robert Klemme

bpfurtado

Michael T. Richter

Andrei Ursan

Tim Pease

Leslie Viljoen

Robert Dober

Leslie Viljoen

Leslie Viljoen

Dan Zwell

Robert Dober

John Joyce

Philip Gatt

John Joyce

Leslie Viljoen

Robert Dober

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