# Ruby C-API reference

**URL:** <https://www.ruby-forum.com/t/ruby-c-api-reference/177572>\
**Category:** Ruby\
**Created:** [October 20, 2009, 12:40pm UTC](https://www.ruby-forum.com/t/ruby-c-api-reference/177572 "2009-10-20T12:40:26Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![rantanplan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/bb73d2/32.png) [@rantanplan](https://www.ruby-forum.com/u/rantanplan)\
**Post date:** [October 20, 2009, 12:40pm UTC](https://www.ruby-forum.com/t/ruby-c-api-reference/177572/1 "2009-10-20T12:40:26Z")

</div>

Hi,

I found a reference at:

```
> http://www.ruby-doc.org/doxygen/current/index.html

```

but this documentation is just a API function listing  
without documentation and without tutorial …

Q: does I miss something ?

mfg

aotto1968

---

<div class="post-metadata">

**Author:** ![rantanplan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/bb73d2/32.png) [@rantanplan](https://www.ruby-forum.com/u/rantanplan)\
**Post date:** [October 20, 2009, 1:39pm UTC](https://www.ruby-forum.com/t/ruby-c-api-reference/177572/2 "2009-10-20T13:39:39Z")

</div>

Andreas O. wrote:

> but this documentation is just a API function listing  
> without documentation and without tutorial …
> 
> Q: does I miss something ?

[http://www.ruby-doc.org/docs/ProgrammingRuby/html/ext\_ruby.html](http://www.ruby-doc.org/docs/ProgrammingRuby/html/ext_ruby.html)

---

<div class="post-metadata">

**Author:** ![rantanplan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/bb73d2/32.png) [@rantanplan](https://www.ruby-forum.com/u/rantanplan)\
**Post date:** [October 20, 2009, 2:33pm UTC](https://www.ruby-forum.com/t/ruby-c-api-reference/177572/3 "2009-10-20T14:33:27Z")

</div>

I rarely use the Doxygen documentation. The most helpful places I refer  
to are:

1. The chapter on extensions in the pick-axe as linked to above
2. The readme.ext file bundled with MRI.