Grzegorz Piwowarek

Grzegorz Piwowarek has asked 15 questions and find answers to 81 problems.

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I am a passionate software engineer, trainer, and international conference speaker who cares about quality, craftsmanship, clean code and getting things done.

Grzegorz Piwowarek questions

How to create Java array in Kotlin for @PropertySource?
Spring Webflux with Spring MVC - nulls emitted when using doOnEach
Conditional side-effects and optional types in Kotlin
What's the difference between Stream.builder() and calling stream() on an ArrayList in Java?
Kotlin-allopen plugin + @JvmField on a val not final enough
What is the maximum number of lambdas used in one Java class?
Why do unsafe .run() call works fine on a null value in Kotlin?
How to pass a list as a JUnit5's parameterized test parameter?
How can I handle IOException when Kafka is down?
Why is Java 8 Optional implemented as final, without Some and None hierarchy?

Grzegorz Piwowarek answers

Grouping by adding two BigDecimal type attributes of a class
How to convert nested loops to nested Streams? [duplicate]
Can Kotlin be defined a strongly typed language?
Java 8 functional: Lost type information in the middle of the way
How to set a string to all lowercase [duplicate]
Java sum two double[][] with parallel stream
Turning an array of Java8 streams into a stream of tuples
Why Java's Optional doesn't call Consumer in ifPresent()?
Java 8 Lambda List to Map<Int, List<String>>
Java. Which @Nullable should I use to mark return value with one?