Darr Mirr – Medium

Mar 24

Seven insights about learning foreign language.

Insights that significantly improved my foreign language. Introduction. Communication between people spreads out of countries borbers for a long time ago. Nowadays, a lot of people travel around the World, work at international companies or just communicate with people from another countries via Internet. Therefore, people start to learn foreign language…

Language Learning

9 min read

Seven insights about learning foreign language.

Feb 14

Sharing VPN, Internet host networks with Hyper-V Ubuntu on Windows 10

Introduction Windows 10 has WSL (Windows Subsystem for Linux) based on Ubuntu, but it does not provide full capability of standalone installation of Ubuntu. Therefore, I have to install Ubuntu in Hyper-V on my laptop. It works fine in Hyper-V, but I faced with trouble: I have no access to Internet…

VPN

5 min read

Sharing VPN, Internet host networks with Hyper-V Ubuntu on Windows 10

Jan 18

Teamlead notes: on the way to dream team.

I sit in unknown room. There were two people at front of me. Names were only one thing what I knew about them. There were a third person in the room. He sit on the left hand. I had to turn my head at his side when he spoke. So…

6 min read

Teamlead notes: on the way to dream team.

Oct 19, 2021

In-memory cache with SQL-query capability

Introduction At this article we are going to take a look at TweeCache Java library. TweeCache provides high-performance caching library for Java and capability to execute SQL-query against data stored in cache. Get Stated It is required to execute two precondition steps before to start adding dependency to project by your favorite build…

Java

6 min read

In-memory cache with SQL-query capability

May 19, 2021

Logging at Functional Programming

How to log functionally at Java Introduction Logs give us insight how application worked at specific time. Therefore logging is vitally important for any application. And logging framework exists almost at any language. Today I discuss about logging practices that I use at functional coding style. Let’s look on following…

Functional Programming

5 min read

Mar 9, 2021

Functional Chain of Responsibility

Useful design pattern at functional way at Java — Introduction Imaging you have to visit a doctor. You call to emergency service and make appointment to visit therapist tomorrow. Next day you go to hospital and face with trouble. There is only one door and no nameplate on it! It makes you very confuse. You have no choice and open…

Java

7 min read

Jan 19, 2021

Protect function from illegal input value

Introduction Hey! I have a function: * you can read about 'def' method in my article at medium But my teammate write such code: And code execution output: Exception in thread "main" java.lang.NullPointerException at com.github.darrmirr.fp.contract.Main.lambda$main$0(Main.java:14) at com.github.darrmirr.fp.contract.Main.main(Main.java:17) Something goes wrong and NullPointerException (NPE) is thrown while main method is…

Functional Programming

5 min read

Protect function from illegal input value

Jan 16, 2021

Expressive and short way to write lambda expression at Java

Introduction What is more expressive and shorter Java function definition? Function<Integer, Function<Integer, Integer>> sum = x -> y -> x + y; or var sum = def((Integer x) -> (Integer y) -> x + y); In my opinion, the second definition is more expressive and shorter. …

Functional Programming

10 min read

Expressive and short way to write lambda expression at Java