This is a new feature introduced in 2016.3. Parameter hints means that when you call other methods, if the parameter passed is null or literal, the parameter name of the original method will be prompted in front. It is convenient to check whether the parameters passed are what you want. If you want to turn off this feature. Settings → Editor → General → Appearance → Show parameter name hints. Just check it off here.
This is a new feature introduced in 2016.3. Parameter hints
means that when you call other methods, if the parameter passed is null or literal, the parameter name of the original method will be prompted in front. It is convenient to check whether the parameters passed are what you want.
If you want to turn off this feature. Settings → Editor → General → Appearance → Show parameter name hints. Just check it off here.