Published in Dev Genius

·Pinned

How to Develop a Wordle Game using TDD in 25 Minutes

Developing a complete Wordle Game is very easy with TDD — Everybody is playing Wordle these days… And I love TDD. TDD Conference 2021 — All Talks First International Test Driven Development took place on July 10th.blog.devgenius.io So, let’s get moving… TL;DR: With just a few steps we can build a robust Wordle. Defining a word The minimum information amount in Wordle is a word. We can argue that letter is smaller, but we think all needed letter protocol is…

Test Driven Development

6 min read

How to Develop a Wordle Game using TDD in 25 Minutes

Test Driven Development

6 min read

Published in Dev Genius

·Pinned

How to Get Rid of Annoying IFs Forever

Why the first instruction we learn to program should be the last to use. Nobody uses GOTO instruction anymore and few programming languages still support it. We have matured and confirmed spaghetti code is unmaintainable and error prone. Structured Programming solved that problem years ago. We got rid of the…

6 min read

6 min read

Published in Dev Genius

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Code Smell 13 — Empty Constructors

Incomplete objects cause lots of issues. Problems Mutability Incomplete objects Concurrency inconsistencies between creation and essence setting. Setters Nude Models — Part I : Setters Ye olde Reliable Data Structures and Their Controversial (Write) Access.medium.com Solutions Pass the object’s essence on creation The evil powers of mutants To mutate is to evolve. It was proposed by Sir Charles Darwin and we use it in the software industry. But something is…codeburst.io

Code Smells

2 min read

Code Smells

2 min read

Code Smell 13 — Empty Constructors

Incomplete objects cause lots of issues.

Problems

Mutability
Incomplete objects
Concurrency inconsistencies between creation and essence setting.
Setters

Nude Models — Part I : Setters

Ye olde Reliable Data Structures and Their Controversial (Write) Access.

medium.com

Solutions

Pass the object’s essence on creation

The evil powers of mutants

To mutate is to evolve. It was proposed by Sir Charles Darwin and we use it in the software industry. But something is…

codeburst.io

Examples

Some persistence frameworks in static typed languages require an empty constructor.

Exceptions

Stateless objects. Always better solution than static class methods.

Sample Code

Wrong

Right

Published in Dev Genius

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How to Find the Stinky Parts of Your Code

The code smells bad. Let’s see how to change the aromas. — TL;DR: A Compilation of bad smells in code. In this series, we will see several symptoms and situations that make us doubt the quality of our developments. We will present possible solutions. Most of these smells are just clues of something that might be wrong. They are not rigid rules. Code Smells Code Smell 01 — Anemic Models Your objects are a bunch of public attributes without behavior.medium.com

Code Smells

14 min read

How to Find the Stinky parts of your Code

Code Smells

14 min read

Published in Dev Genius

·Pinned

Code Smell 01 — Anemic Models

Your objects are a bunch of public attributes without behavior. — Protocol is empty (with setters/getters). If we ask a domain expert to describe an entity he/she would hardly tell it is ‘a bunch of attributes’. Problems No Encapsulation. No mapping to real world entities. Duplicate Code Coupling Solutions 1) Find Responsibilities. 2) Protect your attributes. 3) Hide implementations. 4) Delegate Examples

Code Smells

1 min read

Code Smells

1 min read

Code Smell 01 — Anemic Models

Your objects are a bunch of public attributes without behavior.

Protocol is empty (with setters/getters).

If we ask a domain expert to describe an entity he/she would hardly tell it is ‘a bunch of attributes’.

Problems

No Encapsulation.
No mapping to real world entities.
Duplicate Code
Coupling

Solutions

1) Find Responsibilities.

2) Protect your attributes.

3) Hide implementations.

4) Delegate

Examples

DTOs

Sample Code

Wrong

Right

Published in Level Up Coding

·8 hours ago

Code Smell 193 - Switch Instead of Formula

Which is better, declarative or shorter code? — TL;DR: Be declarative enough but no more. Problems Readability Premature Optimization Solutions Use a short version (or not). Always favor readability >> Premature optimization. Humans learn by examples, not by formulas. Shorter is not always better. Context Last week, a tweet went viral because of a missing formula. It is the DigiD…

Clean Code

2 min read

Code Smell 193 - Switch Instead of Formula

Clean Code

2 min read

Published in Level Up Coding

·6 days ago

ChatGPT: The Surprising Teacher of a +25 Year Senior Programmer

My original title was: ‘I have +25 Years of Programming and Yet, ChatGPT is Teaching me New Things’, but ChatGPT changed it. — TL;DR: No matter your experience. New tools will empower you even more. The Past I’ve been working as a software developer for 26 years and I’ve also been teaching at the university at the same time. I’ve always been interested in Artificial Intelligence. I’ve founded a start-up on chatbots many years ago…

Chatgpt

2 min read

Chatgpt

2 min read

Published in Level Up Coding

·Jan 17

Code Smell 192 — Optional Attributes

You need to model something optional. Have you tried collections? — TL;DR: Collections are fantastic. And Polymorphic. Problems Null If Pollution Solutions Change the optional attribute to a collection. Context If you need to model something that might be missing, some fancy languages will provide optional, nullable, and many other wrong solutions dealing with The Billion Dollar Mistake. Empty collections and non-empty collections are…

Programming

2 min read

Programming

2 min read

Published in Level Up Coding

·Jan 9

Code Smell 191 — Misplaced Responsibility

You have a clear responsibility for the wrong object — TL;DR: Don’t be afraid to create or overload the proper objects. Problems Bijection Fault. Solutions Find actual behavior on the real objects using the MAPPER. Answer the question: ‘Whose responsibility is..?’ Context Finding responsible objects is a tough task. If we talk to anybody outside the software world, they will tell us where…

Clean Code

2 min read

Code Smell 191 — Misplaced Responsibility

Clean Code

2 min read

Published in Level Up Coding

·Jan 3

Code Smell 190 — Unnecessary Properties

Stop thinking of data as attributes. They are only needed to back your behavior — TL;DR: Don’t focus on accidental properties. You won’t need many of them. Problems Anemic Models Properties bloating YAGNI violation Solutions Create attributes only to support your methods (behavior). Context Whenever they want to model a person or an employee, junior programmers or students add an attribute ‘id’ or ‘name’ without thinking if they…

Clean Code

2 min read

Clean Code

2 min read

How to Develop a Wordle Game using TDD in 25 Minutes

How to Get Rid of Annoying IFs Forever

Code Smell 13 — Empty Constructors

Code Smell 13 — Empty Constructors

Problems

Nude Models — Part I : Setters

Ye olde Reliable Data Structures and Their Controversial (Write) Access.

Solutions

The evil powers of mutants

To mutate is to evolve. It was proposed by Sir Charles Darwin and we use it in the software industry. But something is…

Examples

Exceptions

Sample Code

Wrong

Right

How to Find the Stinky Parts of Your Code

Code Smell 01 — Anemic Models

Code Smell 01 — Anemic Models

Your objects are a bunch of public attributes without behavior.

Problems

Solutions

Examples

Sample Code

Wrong

Right

Code Smell 193 - Switch Instead of Formula

ChatGPT: The Surprising Teacher of a +25 Year Senior Programmer

Code Smell 192 — Optional Attributes

Code Smell 191 — Misplaced Responsibility

Code Smell 190 — Unnecessary Properties

Maximiliano Contieri