Created
July 25, 2011 15:31
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playing with instance variables
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| ruby-1.8.7 > @foo = 42 | |
| => 42 | |
| ruby-1.8.7 > @foo | |
| => 42 | |
| ruby-1.8.7 > @foo = nil | |
| => nil | |
| ruby-1.8.7 > @foo | |
| => nil | |
| ruby-1.8.7 > remove_instance_variable :@foo | |
| => nil | |
| ruby-1.8.7 > @foo | |
| => nil | |
| ruby-1.8.7 > $VERBOSE = true | |
| => true | |
| ruby-1.8.7 > @foo | |
| (irb):10: warning: instance variable @foo not initialized | |
| => nil |
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