You're gonna have a tough time talking to others about your code if you don't agree on common terminology. Function invocation is just function invocation, it doesn't say anything about the form of the parameters or composition. Dependency injection is a well known and commonly understood method of facilitating decoupling and composition by passing a function's dependencies as parameters. From your comments you're talking about the second, but refusing the name, for... reasons?

[–] philm@programming.dev 0 points 1 year ago (1 children)

I guess I'm a little bit too long already in the functional/data-driven world (after being a decade in OO languages (IMO too long...)). In OOP you may need a separate term for that.

But I think it' just not really necessary in functional programming, it's just another parameter when calling a function, that may be a somewhat type-constrained generic (for testing e.g. with a mock implementation).

I mean function parameters are somewhat dependencies anyway, so should I call all my parameters now dependencies and invocation "injection"?

[–] bjornsno@lemm.ee 1 points 1 year ago

Thought you were OP for a second there, as they were talking about composability. Whether it's dependency injection or not depends on what shape your parameters take. If you're doing functional programming and you're passing handlers and connections etc. as params, that's dependency injection. If you're only passing strings and objects and such and the function has to do a bunch of logic to decide how to handle its params, that's not dependency injection.

[–] jvisick@programming.dev 3 points 1 year ago

“Dependency injection” is just a term for providing a function or method with its dependencies rather than making the function go and gather them itself.

It’s (typically) done through parameters, but it’s still more specific than just invoking a function. It describes how that function was written and the reasoning for certain parameters. To the other commenter’s point, you’ll have a hard time communicating about your code with other developers if you refuse to use the term dependency injection just because you don’t like OOP.