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Add KiwiCollections utility class #757

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sleberknight opened this issue Jul 23, 2022 · 0 comments · Fixed by #758
Closed

Add KiwiCollections utility class #757

sleberknight opened this issue Jul 23, 2022 · 0 comments · Fixed by #758
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new feature A new feature such as a new class, method, package, group of classes, etc.
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2.2.0

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@sleberknight
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Currently each of KiwiLists and KiwiSets has methods that accept their respective type – List and Set – to check if they are null, empty, not null, not empty, etc. But since the argument types are more specialized, if you have a Collection<T>, you can't use them. We should have had these utilities in a utility class that accepts Collection<T> from the beginning, but at this point we can just add a new utility class that accepts Collection<T> as argument types.

I've recently run across situations in several services where I had a collection and wanted to check if (not) null/empty but couldn't use KiwiLists or KiwiSets.

So, KiwiCollections will initially contain the following methods, which are the ones most commonly used:

  • static <T> boolean isNullOrEmpty(Collection<T> collection)
  • static <T> boolean isNotNullOrEmpty(Collection<T> collection)
  • static <T> boolean hasOneElement(Collection<T> collection)
@sleberknight sleberknight added the new feature A new feature such as a new class, method, package, group of classes, etc. label Jul 23, 2022
@sleberknight sleberknight added this to the 2.2.0 milestone Jul 23, 2022
@sleberknight sleberknight self-assigned this Jul 23, 2022
sleberknight added a commit that referenced this issue Jul 23, 2022
@sleberknight
Add KiwiCollections utility class
dc2f641 
* Add KiwiCollections with three initial methods:
  - isNullOrEmpty
  - isNotNullOrEmpty
  - hasOneElement
* Refactor KiwiPreconditions to use these new KiwiCollections methods

Closes #757
@sleberknight sleberknight mentioned this issue Jul 23, 2022
Merged
sleberknight added a commit that referenced this issue Jul 23, 2022
@sleberknight
Add KiwiCollections utility class (#758)
1b1334a 
* Add KiwiCollections with three initial methods:
  - isNullOrEmpty
  - isNotNullOrEmpty
  - hasOneElement
* Refactor KiwiPreconditions to use these new KiwiCollections methods

Closes #757
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new feature A new feature such as a new class, method, package, group of classes, etc.
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Add KiwiCollections utility class kiwiproject/kiwi
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