why can't you use `_` as a parameter name in norma...

# announcements

[tschuchort]

why can't you use _ as a parameter name in normal functions?

[cy]

because it is reserved for unused parameter names, that feature seems to be useless for regular functions, isn't it? what is a usecase?

[gildor]

Also _ is reserved keyword in Java 9

[kirillrakhman]

@cy when you override a function, you can't remove a parameter even if it's unused

[cy]

why do you need to remove it?

[cy]

parameter shouldn't be marked as unused if the function is overridden

[kirillrakhman]

maybe you want to explicitly mark the paramerer as ignored. not a frequent usecase for me, just speculating

[cy]

it is not so useful for self-documenting code because it is generally a super-type at call-site (otherwise the questions is why do you have type hierarchy at all)

[okkero]

I agree with Kirill. Bar somewhat different circumstances, the use case is almost identical to that of ignored parameters in lambdas

[tschuchort]

sometimes I'm overriding the function and don't really need all parameters

[cy]

well, you generally don't need to type all the parameters as Ctrl-O does it for you 😉

[kirillrakhman]

pft, typing is so 2006 😄

[kirillrakhman]

my argument was about reading

[cy]

Omitting parameters also has a disadvantage: when you read it you can't see what was omitted and why