Mario Fusco @mariofusco Twitter profile

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Mario Fusco

@mariofusco

7 years

Programming languages don't differ much in what they make possible, but in the kind of mistakes they make impossible

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Mario Fusco

@mariofusco

4 years

Here in Italy people started to share this figure claiming that this is the diagram of the 5G chip that has been inserted in the covid vaccine. In reality it is the electric circuit of a guitar pedal and I believe that putting it in the covid vaccine has been an excellent idea💡

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Mario Fusco

@mariofusco

4 years

When you replace your non-working code with something copied from StackOverflow

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Mario Fusco

@mariofusco

3 years

When I was young I was a very bad programmer. But after decades of gaining experiences at work and attempts to learn stuff the hard way, I'm finally no longer young.

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Mario Fusco

@mariofusco

6 years

Waterfall vs. Agile vs. Reality

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Mario Fusco

@mariofusco

9 years

4yo: "dad, what are you writing?" me: "tests" 4yo: "why?" me: "to find and remove errors in my program" 4yo: "why did you put errors in it?"

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Mario Fusco

@mariofusco

2 years

Blockchain exists since 15 years now. It is no longer possible to say that it is an immature technology and we're still experimenting with it. Show me a compelling use case for it or please let's finally admit that it is a waste of time, energy and money and move forward.

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Mario Fusco

@mariofusco

7 years

I will never understand management

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Mario Fusco

@mariofusco

2 years

There's a simple O(1) algorithm to check if a number is prime that works in 95%+ cases. Of course this is a joke, but it also comes with an important lesson: when estimating the probability of something never forget to take count of the base rate

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Mario Fusco

@mariofusco

8 years

Current status of Javascript development

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Mario Fusco

@mariofusco

6 years

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Mario Fusco

@mariofusco

2 years

Unpopular opinion: this book is almost 30 years old and in all honesty didn't age very well. If you own a copy do yourself a favor: bury it deeply in your bookshelf and forget about it forever.

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Mario Fusco

@mariofusco

3 years

State of the art of artificial intelligence

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Mario Fusco

@mariofusco

9 months

The most important superpower of a developer is complaining about everybody else's code #vdt24

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Mario Fusco

@mariofusco

5 years

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Mario Fusco

@mariofusco

6 years

And they say: "I don't get why all developers have so unconventional sleep patterns"

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Mario Fusco

@mariofusco

7 years

The Apple philosophy

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Mario Fusco

@mariofusco

3 years

What #agile became vs. what it was (and should be)

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Mario Fusco

@mariofusco

5 years

Developers' hell

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Mario Fusco

@mariofusco

5 years

The 3 most dangerous humans in the world are a back-end developer designing a GUI, a front-end developer writing a SQL query and, as obvious consequence, anybody defining himself a full-stack developer.

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Mario Fusco

@mariofusco

5 years

If the world was created by a programmer...

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Mario Fusco

@mariofusco

4 years

It seems that, due to travel restrictions imposed by the covid situation, this year US has been obliged to organise a coup at home.

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Mario Fusco

@mariofusco

1 year

Finally a fashion style I can understand!

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Mario Fusco

@mariofusco

5 years

I graduated in Computer Science in late 90s When I studied DBs there was no Big Data When I studied Distributed Systems there was no Cloud When I studied AI there was no deep learning When I studied Networking there was no wifi Learn the fundamentals the rest will change anyway

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Mario Fusco

@mariofusco

4 years

The essence of smart software development

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Mario Fusco

@mariofusco

5 years

Programming explained with music

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Mario Fusco

@mariofusco

1 year

In my opinion the general availability of virtual threads made 21 the most disruptive and innovative Java release since 8... ... and still people seem to focus on stuff like this 👇 Sometimes I really don't understand developers 🤷

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Mario Fusco

@mariofusco

10 years

Everybody loves Javascript, isn't it? http://t.co/CJYfmDY8eU

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Mario Fusco

@mariofusco

5 years

Getters and setters Javadocs

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Mario Fusco

@mariofusco

8 years

"We tested each and every setter and getter, what can go wrong with integration?"

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Mario Fusco

@mariofusco

5 years

Developer: I'd need a couple of weeks to refactor the big mess we have and fill our technical debt before we move forward Manager: that's impossible I can give you no more than 1 or 2 days, otherwise we will miss the next deadline Developer: ok, done

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Mario Fusco

@mariofusco

2 years

At the moment I cannot imagine a more misleading IT buzzword than #serverless

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Mario Fusco

@mariofusco

10 years

Imperative vs. Functional - Separation of Concerns http://t.co/G2cC6iBkDJ

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Mario Fusco

@mariofusco

7 years

Current status of Java 9 adoption

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Mario Fusco

@mariofusco

8 years

Software versioning schemes

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Mario Fusco

@mariofusco

3 years

#Lombok

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Mario Fusco

@mariofusco

6 months

Java rocks More than ever

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Mario Fusco

@mariofusco

5 years

You can optimise for low latency. You can optimise for high throughput. You can optimise for memory occupation. However 90% of times the most precious thing you should optimise for is maintainability.

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Mario Fusco

@mariofusco

2 years

"You should really rewrite this legacy Java code in Kotlin/Rust/Scala/Brainfuck/..."

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Mario Fusco

@mariofusco

10 years

The world seen by an object-oriented programmer http://t.co/5Gp7YueFWc

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Mario Fusco

@mariofusco

4 years

It works!

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Mario Fusco

@mariofusco

6 years

Best Venn diagram of the year

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Mario Fusco

@mariofusco

2 years

Unpopular opinion: ALL software development methodologies have been invented by people who, not having a clue on how software is developed in the real world, decided to make money telling to the ones who actually do the job how to do it.

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Mario Fusco

@mariofusco

9 years

Optional Type System

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Mario Fusco

@mariofusco

4 years

Trying to make your Java code faster by "helping" the JIT compiler without knowing how it actually works

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Mario Fusco

@mariofusco

8 years

IT jobs explained with a broken lightbulb

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Mario Fusco

@mariofusco

5 years

"Was it that simple? It took you 2 minutes to find the solution and you just googled it" "Not that simple. It took me 20 years to learn the right thing to google"

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Mario Fusco

@mariofusco

5 years

Monday morning...

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Mario Fusco

@mariofusco

5 years

Applying the KISS principle also implies doing "boring" stuff instead of blindly following the coolest trends of the moment. Do monoliths unless you don't need microservices for a good reason. Use synchronous code unless you don't need async or reactive for a good reason.

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Mario Fusco

@mariofusco

8 months

I'm seriously considering adding this to all the open source projects to which I contribute.

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Mario Fusco

@mariofusco

7 years

Wastes of sw devel 1.Solving the wrong problem 2.Reinventing the wheel 3.Unnecessary optimization 4.Emotional attachment to code 5.Meetings

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Mario Fusco

@mariofusco

3 years

Is there any other industry like open source software, where free users behave and have demands and expectations as if they were paying customers, also making money out of someone else's work, without giving absolutely anything in exchange?

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Mario Fusco

@mariofusco

2 years

Honest question: if you could magically add a type system to a significant code base written with a dynamic programming language, how many bug will you uncover?

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Mario Fusco

@mariofusco

1 year

Your friendly reminder that a prototype is a throw away experiment, a proof of concept intended to demonstrate the feasibility of an idea, not something that is meant to be evolved till reaching production.

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Mario Fusco

@mariofusco

1 year

#Lombok is the perfect demonstration that the simple fact that is technically possible to do something neither implies that is a good idea nor represents a good enough reason to actually do it.

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Mario Fusco

@mariofusco

2 years

This is the book I was waiting for!

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Mario Fusco

@mariofusco

5 years

Tips for #Java API - Choose method names carefully - Add convenience method sparingly - Avoid long arguments lists (esp same type args) - For args types favor interfaces over classes - Use overloading judiciously - Return empty Collections or Optionals, not nulls - Write javadocs

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Mario Fusco

@mariofusco

8 years

Latency numbers every programmer should know

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Mario Fusco

@mariofusco

6 years

Current status

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Mario Fusco

@mariofusco

6 years

Dear @IBM let's make a deal: - leave my code open - don't tread on my @RedHat culture and most important - don't try to turn this 60 hrs/week enthusiast developer into a sad 40 hrs/week badge user and spreadsheet filler and we will be friends for long long time

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Mario Fusco

@mariofusco

5 years

Applying project management theories to classical music

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Mario Fusco

@mariofusco

5 years

A clear symptom that your software is overengineered is that writing a simple test requires 200 lines of mocks and 3 lines of logic. And then you're unsure if your test actually verified anything or just injected the result. If your unit tests look like this take a step back.

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Mario Fusco

@mariofusco

2 months

I'm tired of seeing this book constantly listed among the books that every sw dev must read. To me it's made 90% of utterly trivial advices and 10% of blatant mistakes (best functions have 0 args 🤦). Evidently I'm missing something. If you liked this book can you explain why?

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Mario Fusco

@mariofusco

4 years

This is a game that I could endorse

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Mario Fusco

@mariofusco

5 months

The pain of maintaining an open source project 😢

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Mario Fusco

@mariofusco

1 year

Tell me one reason, one single reason, why you are not running your Java code on the latest available JDK. Tell me one reason, one single reason, why you are not upgrading your JDK version IN PRODUCTION every 6 months.

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Mario Fusco

@mariofusco

6 years

Customer: "do you think we should use solution A or B?" Me: "I STRONGLY suggest A for reasons x, y and z" Customer: "ok, thanks a lot" ... a few weeks/months later ... Customer: "we decided to go with B, but surprisingly is not working, can you help us with it?" #mylife

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Mario Fusco

@mariofusco

5 years

If you're wondering why everybody loves Italy (and if you don't you should), I'll show you with one picture.

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Mario Fusco

@mariofusco

6 years

I'm not a so good developer, but I did a smart move in my career and I keep doing it every time is possible: I always try to surround myself with people better than me. This tweet is to thank my old and new colleagues from whom I learned a lot and I keep learning every day.

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Mario Fusco

@mariofusco

3 years

Which kind of bug fixer are you?

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Mario Fusco

@mariofusco

8 years

In Java everything is a object In Clojure everything is a list In Haskell everything is a function In Javascript everything is a bad mistake

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Mario Fusco

@mariofusco

2 years

Lambdas are glue code, two lines may be too many. Avoid multiline lambda. @venkat_s at #jfokus

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Mario Fusco

@mariofusco

2 years

Untestable code is actually badly designed and written code. @venkat_s at #jfokus

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Mario Fusco

@mariofusco

6 years

"Let's do this in a feature branch" they said, "we will merge it later into master"

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Mario Fusco

@mariofusco

7 years

Things you should NOT do when reporting a bug: 1. Using a stack trace as only issue description, without any clue of how to reproduce it 2. Saying how urgent your problem is and that the human civilization as we know it will be destroyed if it won't be solved in next 30 minutes

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Mario Fusco

@mariofusco

6 years

I'm hoping this could be useful for some friends and colleagues (thanks to @porcelli )

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Mario Fusco

@mariofusco

6 years

Functions are like humans, cute when small, annoying when they get bigger

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Mario Fusco

@mariofusco

7 months

Today is one of those days 🙄

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Mario Fusco

@mariofusco

4 years

Current status

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Mario Fusco

@mariofusco

6 years

"one week ago you said that you needed 2 days to implement that feature" "true, but it was harder than I expected, I need a bit more time" "ok, how much?" "2 days will be enough" #estimation

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Mario Fusco

@mariofusco

1 year

Successful software teams are made of (a small number of) individuals who: - are passionate - are committed - take responsibilities - share knowledge - aren't afraid of making mistakes - recognize others' merits All methodologies are poor replacements for lack of these skills.

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Mario Fusco

@mariofusco

1 year

The increasing amount of YAML written every day is directly proportional to and the major symptom of the decline of software engineering.

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Mario Fusco

@mariofusco

7 years

Rubies are red, Some threads are green, But only Java has AbstractSingletonProxyFactoryBean

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Mario Fusco

@mariofusco

1 year

Best deadlock explanation ever 😉

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Mario Fusco

@mariofusco

6 years

I was wondering why Italian politics are so against journalists and then this guy made me see the reason clearly

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Mario Fusco

@mariofusco

5 years

Choosing an OS

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Mario Fusco

@mariofusco

1 year

Software development explained with cars

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Mario Fusco

@mariofusco

6 years

I finished in 4 days something that I estimated to take 4 weeks. Either I am a great developer or I suck at estimations. ... Or estimations are totally useless.

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Mario Fusco

@mariofusco

3 years

A poor Java developer between a Kotlin fan and a Scala one

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Mario Fusco

@mariofusco

11 months

Scientists create Typescript, a fake type system built on top of the worst possible dynamic language, that could be an alternative to a properly statically typed language 🤔

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Mario Fusco

@mariofusco

7 years

As a software developer, I want to throw away user stories and all other Agile bullshits so that I'll have time to get some work done

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Mario Fusco

@mariofusco

8 years

In software design and development almost everything is possible, but only a small fraction of what is possible is also appropriate

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Mario Fusco

@mariofusco

8 years

Best known machine learning algorithms segregated by their application intent

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Mario Fusco

@mariofusco

2 years

Javascript doesn't make any sense, today's edition 👇

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Mario Fusco

@mariofusco

3 years

Test passed, ship it!

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Mario Fusco

@mariofusco

2 years

I always disliked Lombok, but now I really don't see why keeping using it at all. Tell me one single valid reason why you should use it with modern Java.

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Mario Fusco

@mariofusco

8 years

9 devs' lies 1 Tested 2 Fixed 3 Not a bug 4 Thread-safe 5 Done in 2 days 6 User's fault 7 It scales 8 Self-documenting 9 I got requirements

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Mario Fusco

@mariofusco