le0nidas

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Athens, Greece Joined on Nov 23, 2017 https://le0nidas.gr

le0nidas

Feb 14 '21

The “Tell, don’t ask” principle

#designprinciples #telldontask

1 min read

I wrote a GitHub Action using Kotlin

I'm sorry but I don't understand what exactly you mean by ID?

Sep 12 '20

Make impossible states impossible - Kotlin edition

Both arguments are valid. Especially the second one didn't ...

Mar 23 '20

Make impossible states impossible - Kotlin edition

That is a clever usage of interfaces! I recently had to de...

Mar 23 '20

A function’s intent should be revealed by its name

That's true. Thank you for pointing it out :)

Nov 2 '19

le0nidas

Feb 7 '21

LSP and ISP: The LI of SOLID

#designprinciples #isp #lsp #solid

2 min read

le0nidas

Jan 24 '21

Avoid primitive obsession and build your own context

#codesmells #domaindrivendesign #primitiveobsession #valueobjects

3 min read

le0nidas

Jan 17 '21

IoC: Inversion of Control principle

#designprinciples #ioc

2 min read

le0nidas

Jan 7 '21

The memento design pattern in Kotlin

#designpatterns #kotlin

3 min read

le0nidas

Jan 2 '21

Test doubles: dummies, stubs, mocks, fakes

#testing #dummy #fake #mock

3 min read

le0nidas

Dec 26 '20

SLAP: Single Level of Abstraction Principle

#cleancode #designprinciples #slap

1 min read

le0nidas

Dec 16 '20

I prefer not to use the keyword “it”

#cleancode #kotlin

1 1

1 min read

le0nidas

Dec 10 '20

Don’t share constants between production and test code

#goodpractices #testing

2 min read

le0nidas

Dec 9 '20

Your tests can also be your documentation

#testing

1 min read

le0nidas

Dec 8 '20

Two reasons why you should add a return type in your functions in Kotlin

#cleancode #kotlin

2 min read

le0nidas

Dec 7 '20

Don’t force your objects to construct what they need

#designprinciples #goodpractices #srp

4 1

1 min read

le0nidas

Oct 29 '20

Know your tools: $SELECTION$ in Intellij IDEA

#intellij #knowyourtools #livetemplates

1 min read

le0nidas

Oct 21 '20

Good practices: First write the test then fix the bug

#goodpractices #tdd #testing

1 min read

le0nidas

Oct 20 '20

TIL: @NullAndEmptySource in JUnit5

#todayilearned #junit5 #testing

1 min read

le0nidas

Sep 27 '20

A use case of using chain of responsibility pattern to scale strategy

#designpatterns #kotlin

2 min read

le0nidas

Aug 30 '20

I wrote a GitHub Action using Kotlin

#actionshackathon #githubactions #kotlin #docker

28 2

4 min read

le0nidas

Aug 29 '20

Introduction to GitHub Actions

#githubactions #github #introduction

3 min read

le0nidas

Aug 13 '20

Know your tools: scratch files in IntelliJ IDEA

#intellij #kotlin #scratchfiles

2 min read

le0nidas

Aug 11 '20

TIL: vararg in Kotlin is never nullable

#kotlin

1 min read

le0nidas

Aug 2 '20

kscript from docker

#bash #docker #kotlin #kscript

2 min read

le0nidas

Aug 1 '20

Readable codebase: extract conditions / predicates

#cleancode #kotlin

2 min read

le0nidas

Jul 12 '20

Write comments only when they answer the “Why?”

#cleancode #comments

2 min read

le0nidas

Jun 26 '20

Code review: don’t just request a change

#codereview #softwareengineering

1 min read

le0nidas

May 17 '20

Cherry pick all the commits from a merged branch

#bash #git #gitalias

3 min read

le0nidas

Apr 26 '20

Null object pattern and sealed classes

#designpatterns #kotlin #nullobjectpattern #sealedclasses

3 min read

le0nidas

Apr 4 '20

Git alias with parameters

#bash #git #gitalias

5 1

3 min read

le0nidas

Mar 25 '20

A smooth refactor using sealed classes and a factory function

#factoryfunction #kotlin #sealedclasses

3 min read

le0nidas

Oct 21 '19

A function’s intent should be revealed by its name

#cleancode #naming

5 2

1 min read

le0nidas

Oct 27 '18

Use sealed classes for better domain representation

#kotlin #sealedclasses #cleancode

3 min read

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The “Tell, don’t ask” principle

Recent comments

I wrote a GitHub Action using Kotlin

Make impossible states impossible - Kotlin edition

Make impossible states impossible - Kotlin edition

A function’s intent should be revealed by its name

LSP and ISP: The LI of SOLID

Avoid primitive obsession and build your own context

IoC: Inversion of Control principle

The memento design pattern in Kotlin

Test doubles: dummies, stubs, mocks, fakes

SLAP: Single Level of Abstraction Principle

I prefer not to use the keyword “it”

Don’t share constants between production and test code

Your tests can also be your documentation

Two reasons why you should add a return type in your functions in Kotlin

Don’t force your objects to construct what they need

Know your tools: $SELECTION$ in Intellij IDEA

Good practices: First write the test then fix the bug

TIL: @NullAndEmptySource in JUnit5

A use case of using chain of responsibility pattern to scale strategy

I wrote a GitHub Action using Kotlin

Introduction to GitHub Actions

Know your tools: scratch files in IntelliJ IDEA

TIL: vararg in Kotlin is never nullable

kscript from docker

Readable codebase: extract conditions / predicates

Write comments only when they answer the “Why?”

Code review: don’t just request a change

Cherry pick all the commits from a merged branch

Null object pattern and sealed classes

Git alias with parameters

A smooth refactor using sealed classes and a factory function

A function’s intent should be revealed by its name

Use sealed classes for better domain representation