How do I assign an attribute based on where an element's index within an array?

Question

I'm using Ruby 2.4. Let's say I have an array of objects, each of type "MyData". Each MyData object has an attribute "attr1". Given my array

[myobj1, myobj2, myobj3, ...]

how do I assign a value to the attribute "attr1" based on its position within the array? FOr example, the first object in the array would hvae "attr1" set to "1", the second would have it set to "2," and so on.

Ursus · Accepted Answer · 2017-01-17 19:47:22Z

3

Try this one. a is your array

a.each_with_index { |item, index| item.attr1 = index + 1 }

edited Jan 17, 2017 at 19:47

answered Jan 17, 2017 at 19:40

Ursus

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