Mari Imaizumi

#ruby

#encoding

#rubygems

#command-line-interface-cli

#developer-tools

#performance

#software-development

#programming

#rubykaigi

#web-development

#data-processing

#software-architecture

#mruby

#ruby-vm

#ruby-implementations

#web-server

#developer-experience-dx

#usability

#ruby-on-rails

#irb

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