Tenderlove Making - Instance Variable Performance
Let’s start today’s post with a weird Ruby benchmark: require "benchmark/ips" class Foo def initialize forward forward ? go_forward : go_backward end ivars = ("a".."zz").map { |name| "@#{name} = 5" } # define the go_forward method eval "def go_forward; #{ivars.join("; ")} end" # define the go_backward method eval "def go_backward; #{ivars.reverse.join("; ")} end" end # Heat Foo.new true Foo.new fa
Tenderlove Making - I am a puts debuggerer
Update (2023-06-28): Added “I required a file, but I want to know what files were actually loaded” I love puts debugging I am a puts debuggerer. I don’t say this to disparage people that use a Real Debugger. I think Real Debuggers are great, I’ve just never taken the time to learn one well. Every time I try to lean one, I end up not using it for a while and have to re-learn how to use it. Anyway,
Object ID in MRI | Tenderlove Making
Objects in Ruby are 40 bytes. Objects are allocated in to pages (or arenas) that are 2^14 (2 to the 14th power) bytes. Pages are allocated with an aligned malloc where the divisor is the size of a page. The first object is allocated at the first address inside the page that is divisible by 40 (or page_start + (40 - page_start % 40) % 40). This means all Ruby object addresses are divisible by 40, a
Ruby Advent Calendar – Tender Lovemaking
Every year Japanese Rubyists participate in what is called the “Ruby Advent Calendar”. What is the Ruby Advent Calendar? Each day leading up to December 25th, one person posts an article to their blog and adds a link to their blog on the Advent Calendar. So, 25 blog posts total. The posts can be about anything related to Ruby. In my opinion, the Ruby Advent Calendar is about encouraging people to
Tender Lovemaking » Blog Archive » RDoc on your iPad
Oh snap! I haven’t posted here in a long time. My day job and my night jobs have been keeping me too busy! Hopefully I’ll have more time to blog in the future. I have a bunch of ideas, I just need to find the time to write! Anyway, let’s talk RDoc, iPad, and epub! I like documentation. I especially like consuming documentation. I thought it would be neat if I could read documentation on my iPad. A
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