softwaremill / softwaremill/macwire
Picking correct constructor
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- Dominant language
- Scala
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Description
I am using an external class Foo:
public Foo() {
}
public Foo(Bar bar) {
this.bar = bar;
}
and trying to wire it in my Scala module:
// Dependancy
def Bar: bar
lazy val foo: Foo = wire[Foo]
Unfortunately MacWire picks the constructor without parameters, though the Bar dependancy is in scope. Is there any way except using the constructor itself to tell MacWire which one to pick?
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The issue names only the wire[Foo] entry point and provides no file or test path. Start by examining how it chooses between Foo constructors, then review the discussion for the intended selection rule; done means a supported way to select the constructor requiring Bar without calling the constructor directly.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- scala
- Domain
- developer-experience
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100