- "Lambdas, Procs and Blocks, Oh My", ChicagoRuby (Elmhurst) 2010-02-20
- "Lambda and Closure: Horrors of the Computer Science Mythos", Great Lakes Ruby Bash, 2010-04-17
The first version of the talk had several examples that didn't make the cut, and with refactoring the greater part are longer used.
The examples were originally developed under 1.8.7; as of last check, they all run under 1.9.1. My environment is OS X using MacPorts; in particular, this environment installs 1.8 as 'ruby' and 1.9 as 'ruby1.9'.
run rake; it will create .txt files with interleaved input/output, using irb and rspec.