Remove/delete object from array in Ruby based on attribute value

Question

I have an array

result = [{:cluster=>[0, 4], :id=>1, :units=>346, :num1=>0.161930681e7, :num2=>0.14223512616e9, "description"=>"Foo"}, { ...

And I want to take out any objects with number of units equal to 0. Looking for something similar to array.splice() but for Ruby What is the best way to do this ?

Zoran · Accepted Answer · 2018-07-17 15:54:23Z

6

You can use the #reject method to return the array without objects whose :units equals 0:

result.reject { |hash| hash[:units] == 0 }

There's also #reject! and #delete_if, which can be used in the same way as above but both modify the array in place.

Hope this helps!

edited Jul 17, 2018 at 15:54

answered Jul 17, 2018 at 15:47

Zoran

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jedi · Accepted Answer · 2018-07-17 22:30:05Z

1

You can achieve the same result using select method implemented on the Array class:

result.select { |el| el[:units] == 0 }

answered Jul 17, 2018 at 22:30

jedi

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2 Comments

aabiro Over a year ago

This seems to be how to create a new array with the objects with units = 0

jedi Over a year ago

Ah, I see what you wanted. You wanted to get rid of the objects with units == 0, not an array of those objects.You are right.

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