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Get the value of an instance variable given its name
... is:
class Computer
attr_reader :cpus
end
Now you can do Computer.new(4).cpus.
Note that you can reopen any existing class and make a private ivar into a reader. Since an accessor is just a method, you can do Computer.new(4).send(var_that_evaluates_to_cpus)
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What is a Memory Heap?
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edited Aug 2 '13 at 17:14
Chuck Vose
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answered Feb 22 '10 at ...
Coredata Error “data: ”
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edited Apr 24 '14 at 21:09
answered Sep 5 '11 at 6:03
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How to sort a Ruby Hash by number value?
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Disable intellij indexing on specific folder
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How to execute PHP code from the command line?
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Referring to a file relative to executing script
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edited Apr 24 '16 at 22:07
Merlyn Morgan-Graham
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Increment a value in Postgres
...what would be the SQL statement I'd use in order to move Bill's total to 204?
1 Answer
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What exactly is Heroku?
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edited May 23 '17 at 11:47
Community♦
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answered Dec 29 '12 at 12:45
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