uhhh. why does this compile? <https://play.kotlin...

# announcements

[Rechee Jozil]

uhhh. why does this compile?

https://play.kotlinlang.org/#eyJ2ZXJzaW9uIjoiMS4zLjcyIiwicGxhdGZvcm0iOiJqYXZhIiwiYXJncyI6IiIsImpzQ29kZSI6IiIsIm5vbmVNYXJrZXJzIjp0cnVlLCJ0aGVtZSI6ImlkZWEiLCJjb2RlIjoiLyoqXG4gKiBZb3UgY2FuIGVkaXQsIHJ1biwgYW5kIHNoYXJlIHRoaXMgY29kZS4gXG4gKiBwbGF5LmtvdGxpbmxhbmcub3JnIFxuICovXG5cbmZ1biBtYWluKCkge1xuICAgIHZhbCBzdW0xID0gMSArIDJcbiAgICBcbiAgICB2YWwgdGVzdDEgPSAxXG4gICAgdmFsIHRlc3QyID0gMlxuICAgIHZhbCBzdW0yID0gdGVzdDFcbiAgICArIHRlc3QyXG4gICAgcHJpbnRsbihcIiRzdW0xICRzdW0yXCIpXG59In0=

[Nir]

i guess you expected it not to compile because of the newline?

[Rechee Jozil]

Yup. it doesn't compile for strings. why does it compile for int (or numbers in general)

[Daniel Rampelt]

Looks like it's using the unaryPlus operator function but not using the result, in the IDE it gives a warning

[Rechee Jozil]

@Daniel Rampelt that's good. still scary though. what if dev misses. won't get caught in CI

[Nir]

that is pretty scary

[streetsofboston]

Good reason to write a (unit) test... 😀

[Hullaballoonatic]

yeah, unary plus is one of those questionable additions to kotlin. has anyone ever had a use for it that seemed intuitive? the closest I can think of is absolute value