UML class relationships

[kbuffardi]

I'm starting to use d2 more and more for class diagrams, but I'm running into roadblocks when using some different relationships between classes.

UML supports the following:

I've found I can do:

• Association:
  • ClassA -- ClassB
• Inheritance (technically, it should be an empty arrow, but d2 creates a filled arrow which is "close enough" by my book):
  • ChildClass -> ParentClass

However, I couldn't figure out if/how the others are supported. It'd be great if the following worked:

ClassA - - ClassB  /* Dependency */
ClassA - -> ClassB /* Realization */
ClassA -<> ClassB /* Aggregation */
ClassA -<-> ClassB /* Composition */

This was asked about a year ago but there weren't any responses

[alixander]

https://d2lang.com/tour/connections/#arrowheads