We recommend upgrading to the latest Safari, Google Chrome, or Firefox. (more…)

Java 9 introduces unified logging, a central mechanism configurable with -Xlog to observe class loading, threading, garbage collector, module system, etc. (more…)

Using VAVR's Either type we can express failure scenarios in our type signatures. These container values can be used to write composable code. (more…)

Open-source guide from hack.guides() authored by Peter Olson... (more…)

It obviously cannot be any type that we ordinarily encounter. A variable of type String cannot hold a value of type Object — the Liskov substitution properties simply do not work that way round. The… (more…)