CODEWITHSUNDEEP
rubysortinghash
Muktadir
Muktadir

Reputation: 303

How to sort a hash with duplicate key?

I have a hash

h = {} h.compare_by_identity h[2.51] = 1 h1[2.51] = 2

Edit: h1[2.51] = 2 should be h[2.51] = 2

it is ok with duplicate key. But when i use 

Hash[h.sort]

it return only one value with key like

{2.51=>2}

is there any way to get the two values from the hash in sorted order?

Upvotes: 2

Views: 75

Answers (2)

steenslag
steenslag

Reputation: 80065

Since it can't be done with floats, turn them into strings:

h = {}
h.compare_by_identity
h[2.51.to_s] = 2
h[2.51.to_s] = 1
p h.sort # => [["2.51", 1], ["2.51", 2]]

Upvotes: 1

koffeinfrei
koffeinfrei

Reputation: 2045

Starting with ruby version 2.0 the key 2.51 is actually the same object (because of ruby internal caching) in both assignments. Try to output 2.51.object_id for both cases and it will output the same id.

Upvotes: 2

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