bradfordli123: Yes, they're ordered by key insertion. It's a doubly, circularly linked list.
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if your block only takes 1 argument, arg is the key, arg is the value
(where arg is an Array)
Rudolph: got it thanks!
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Hi, I'm wondering getting 'Integer' after running 'puts 10.class'. I read some books although some of which may be outdated. They all claim that running 'puts 10.class' should get 'Fixnum'. I am using ruby 2.6 built from source on linux, and ruby 2.5.5 on windows.
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what book are you reading
u2crainn: Fixnum and Bignum are now unified under Integer.