CODEWITHSUNDEEP
ruby
Joe
Joe

Reputation: 15341

How to default to zero if the value is nil

I would like to have the result as 0 if some_float is nil. How do I do that?

some_float = 9.238
or 
some_float = nil

some_float.round(2)

Upvotes: 5

Views: 1639

Answers (2)

tokland
tokland

Reputation: 67870

Option 1:

x = some_float ? some_float.round(2) : 0.0

Option 2 (Ruby >= 2.3.0):

x = some_float&.round(2) || 0.0

Upvotes: 2

Sergio Tulentsev
Sergio Tulentsev

Reputation: 230346

Just call a .to_f before round

some_float.to_f.round(2)

Because when you call to_f on nil, it'll return 0.0

9.238.to_f.round(2) # => 9.24
nil.to_f.round(2) # => 0.0

Upvotes: 16

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