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Posted to issues@commons.apache.org by "Bernhard Bonigl (Jira)" <ji...@apache.org> on 2020/01/07 10:14:00 UTC

[jira] [Created] (LANG-1513) ObjectUtils: Lazy evaluation of firstNonNull

Bernhard Bonigl created LANG-1513:
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             Summary: ObjectUtils: Lazy evaluation of firstNonNull
                 Key: LANG-1513
                 URL: https://issues.apache.org/jira/browse/LANG-1513
             Project: Commons Lang
          Issue Type: New Feature
          Components: lang.*
            Reporter: Bernhard Bonigl


{{ObjectUtils.firstNonNull}} takes values, and returns the first non null. This is often used when multiple options have to be tried one after another.

When each option is expensive to compute, you don't want to calculate them all beforehand, but only evaluate them when needed. For this I propose {{firstNonNullLazy}}, which takes a Supplier and only evaluates the value if it needs to be checked.



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