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Home/ Questions/Q 8572327
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Editorial Team
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Editorial Team
Asked: June 11, 20262026-06-11T18:59:04+00:00 2026-06-11T18:59:04+00:00

I want to change 8 strings to integer type and minus 1. I wrote

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I want to change 8 strings to integer type and minus 1. I wrote the code as:

foo1, foo2, too3 ... = foo1.to_i - 1, foo2.to_i - 1, foo3.to_i -1, ...

But I think it’s too complex. Are there some better ways to achieve this goal?

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  1. Editorial Team
    Editorial Team
    2026-06-11T18:59:05+00:00Added an answer on June 11, 2026 at 6:59 pm

    Putting them in an Array would be the simplest thing.

    %w{ 1 2 3 4 5 6 7 8 }.map!(&:to_i).map!(&:pred)
    => [0, 1, 2, 3, 4, 5, 6, 7]  
    
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