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ruby study

使用 ri 碰到的問題

ri -a
/Library/Ruby/Gems/1.8/gems/rdoc-4.0.1/lib/rdoc/ri/paths.rb:88:in `gemdirs': undefined method `map' for Gem::Specification:Class (NoMethodError)
from /Library/Ruby/Gems/1.8/gems/rdoc-4.0.1/lib/rdoc/ri/paths.rb:58:in `each'
from /Library/Ruby/Gems/1.8/gems/rdoc-4.0.1/lib/rdoc/ri/driver.rb:378:in `initialize'
from /Library/Ruby/Gems/1.8/gems/rdoc-4.0.1/lib/rdoc/ri/driver.rb:355:in `new'
from /Library/Ruby/Gems/1.8/gems/rdoc-4.0.1/lib/rdoc/ri/driver.rb:355:in `run'
from /Library/Ruby/Gems/1.8/gems/rdoc-4.0.1/bin/ri:12
from /usr/bin/ri:19:in `load'
from /usr/bin/ri:19

解決方法

�create file ~/.gemrc
gem: --no-rdoc --no-ri
install: --no-rdoc --no-ri
update:  --no-rdoc --no-ri

# 最重要的是下面這句
sudo gem update --system