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Category Archives: Ruby
How to read one non-blocking key press in Ruby
During the development of a simple command line game in Ruby, I wanted to check if the player has pressed a given key in a non-blocking and buffered way. That is: If no key was pressed, don’t wait for one … Continue reading
Rails cluster with Ruby load balancer using Docker
Lately I discovered Docker. I made a quick presentation on it for the rivierarb meetup of february 2014 (slides available). As an example of Docker’s usage, I decided to make something cool: a Rails cluster, with a Ruby load balancer … Continue reading
Install Ruby 1.9.3 on a shared hosting non root
I’ve got through a bit of a hurdle to get Ruby 1.9.3 installed on my shared host. My host is PlanetHoster, but this walkthrough should work with any host giving you a decent development suite (gcc, ld, make…), like 1and1, … Continue reading
rb_iterate replaced by rb_block_call API between Ruby 1.8 and 1.9
You may have noticed that some Ruby libraries using C extensions were suddenly having core dumps when compiled using Ruby 1.9, whereas compiling with Ruby 1.8 got no problems. A good culprit might be the usage of rb_iterate method in … Continue reading
C, Howto, Ruby
1.8, 1.9, block, C extension, example, obsolete, rb_block_call, rb_iterate, ruby, segmentation fault, usage, yield
Code surprise for today
A little code surprise today for all my beloved readers 🙂 You find out what it does 😉 Hint: executing it might help and is harmless Enjoy, with all my best wishes for this year! Muriel
The Ruby C API – Basics
In my 2 previous posts, we saw how to write C extensions, and how to package them. Now time has come to see a little bit of the Ruby C API. This post will deal with the basics, next ones … Continue reading
C, Howto, Ruby
api, C, C extension, DBL2NUM, FIX2INT, INT2FIX, NUM2DBL, RARRAY_LEN, rb_ary_entry, rb_ary_new, rb_ary_push, rb_class_new_instance, rb_const_get, rb_define_class, rb_define_method, rb_define_module, rb_funcall, rb_hash_aref, rb_hash_aset, rb_hash_new, rb_intern, rb_str_new, RSTRING_LEN, RSTRING_PTR, ruby
Packaging Ruby C extensions in nice gems
In the first part of this series on Ruby and C, we’ve seen how easy it is to write a C extension and use it in Ruby environment. However, in real world problems, a Ruby library will have several C … Continue reading
How to write C extensions easily in Ruby
Lots of Ruby libraries suffer from performance. It is in fact one of the biggest criticism that is being made to Ruby. There are lots of ways to improve Ruby’s performance: use latest Ruby version, use JRuby, use Ruby Entreprise … Continue reading
C, Howto, Ruby
bottleneck, C, C extension, compile, dynamic, extconf, howto, link, make, performance, ruby