What's wrong with the code (besides the string literal)? When I take Android Studio's suggestion to convert assignment to assignment expression, it converts the code to this monstrosity:

"Press".also { rollButton.text = it }

The other suggestion is to add method contract to

setText

.

FTR, I found out elsewhere that the underline just means that

text

is a

var

, not that anything is the matter.

about “apply” block, it’s not a suggestion, it’s called “quickfix”, it’s just a context action available for this line of code, for example if you press Alt+Enter on forEach you will see “replace with for loop”, so it’s not really a suggestion, but some shortcuts for common idioms