Loops performance in Groovy

Introduction In the 2018 Advent of Code challenged I solved all the puzzles in Groovy. It is pretty obvious, that…

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Testing Kotlin with Spock Part 3 – Interface default method

Kotlin allows you to put method implementation in an interface. The same mechanism can be found in Java interfaces as…

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Testing Kotlin with Spock Part 2 – Enum with instance method

The enum class with instance method in Kotlin is quite similar to its Java version, but they are look a…

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Testing Kotlin with Spock Part 1 – Object

The object keyword in Kotlin creates singleton in a very convenient way. It can be used for example as a…

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