Hacker News Reader

I don't think I have seen classes with many parameters to avoid varargs in Java, however I have certainly seen classes with dozens of Type Parameters, I believe some form of code generation was responsible.

Can't for the life of me find that class again.

View on HN

SLF4J Loggers define up to two arguments for precisely this purpose:

https://www.slf4j.org/apidocs/org/slf4j/Logger.html#error(ja......)

> This form avoids superfluous string concatenation when the logger is disabled for the ERROR level. However, this variant incurs the hidden (and relatively small) cost of creating an Object[] before invoking the method, even if this logger is disabled for ERROR. The variants taking one and two arguments exist solely in order to avoid this hidden cost.

Look at Set.of and Map.of. Lots of overloads to avoid allocating the vararg array.

Reply on news.ycombinator.com