I started working on a project and I saw some methods with this With prefix and I'm wondering if this refers to a known pattern.
Does anyone know of this naming pattern?
1 Answer
I've seen a with prefix used in a couple of different ways that may be similar to what's being done in the codebase you're working on.
Joshua Bloch's Builder pattern
var myobj = MyObj.builder()
.withProperty1("property 1 value")
.withProperty2("property 2 value")
.build();
Clone immutable objects
var myImmutableObj = new MyImmutableObj("property 1 value", "property 2 value");
var myImmutableObjClone = myImmutableObj.withProperty1("different property 1 value");
answered Jul 8, 2021 at 17:30
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Very interesting, I think they are using both approaches in this project. You nailed it, thanks! Jul 8, 2021 at 17:34
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3To be clear, this is Joshua Bloch's Builder Pattern. Not the GoF Builder Pattern. Jul 8, 2021 at 19:33
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@underthevoid yes. So much so that I never just say builder pattern anymore without qualifying. So much so that I nag other people about it. I hate names that require disambiguation. So much that it can make me fail to upvote an otherwise decent answer while I wait for an edit. Jul 8, 2021 at 21:58
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1@svidgen didn't want to be hasty and start an edit war. But Mike's been gone for 6 hours now. So... Jul 9, 2021 at 2:27
voidand simply set fields (essentially setters); and B) methods that set fields and returnsthis.