Pragmatic Maciej

I am Software Developer, currently interested in static type languages (TypeScript, Elm, ReScript) mostly in the frontend land, but working actively in Python also. I am available for mentoring.

Lublin Joined on Mar 25, 2019 hello@maciejsikora.com

Education

M.Sc. Lublin University of Technology

Work

Developer at DataArt

Pinned

Pragmatic Maciej

Mar 5 '20

No, TypeScript is not OOP version of JavaScript

#typescript #javascript

197

4 min read

Pragmatic Maciej

Feb 25 '20

TypeScript is more than you think

#typescript #javascript

234

11 min read

Pragmatic Maciej

Feb 6 '20

Advanced TypeScript Exercises - Question 1

#typescript #javascript

213

1 min read

Pragmatic Maciej

Sep 24 '19

Algebraic Structures Explained - Part 1 - Base Definitions

#javascript #typescript #elm #functional

8 min read

Pragmatic Maciej

May 28 '22

Helper - the architecture whole

#python #django

2 min read

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Pragmatic Maciej

Oct 9 '21

Return statement is ok

#javascript #webdev #codequality #elm

5 min read

Pragmatic Maciej

Jun 22 '21

Follow the type

#typescript #react #webdev

4 min read

Pragmatic Maciej

Jun 18 '21

Know too much

#python #programming #codequality

5 min read

Cover image for Hide the constant, abstract the code

Pragmatic Maciej

Mar 13 '21

Hide the constant, abstract the code

#javascript #programming #react

3 min read

Pragmatic Maciej

Jan 28 '21

The lonely constant

#programming #javascript #typescript

2 min read

Cover image for The state you've never needed

Pragmatic Maciej

Jan 12 '21

The state you've never needed

#react #javascript #typescript

5 min read

Pragmatic Maciej

Nov 2 '20

Advanced TypeScript Exercises - Answer 10

#challenge #typescript #javascript #webdev

2 min read

Cover image for Advanced TypeScript Exercises - Question 10

Pragmatic Maciej

Oct 23 '20

Advanced TypeScript Exercises - Question 10

#challenge #typescript #javascript #webdev

1 min read

Pragmatic Maciej

Oct 18 '20

Grow up

#watercooler #career

6 min read

Cover image for Advanced TypeScript Exercises - Answer 9

Pragmatic Maciej

Aug 17 '20

Advanced TypeScript Exercises - Answer 9

#typescript #javascript

1 min read

Pragmatic Maciej

Jul 6 '20

Mutation is ok

#typescript #javascript #functional #webdev

100

4 min read

Pragmatic Maciej

Jul 3 '20

A pinch of magic🧙‍♂️

#javascript #react #functional #elm

5 min read

Pragmatic Maciej

May 20 '20

What really is programming?

#discuss #webdev #html #javascript

2 min read

Pragmatic Maciej

May 8 '20

Switch is ok

#javascript #webdev #functional

4 min read

Pragmatic Maciej

May 6 '20

Maybe just Nullable?

#javascript #typescript #webdev #functional

13 min read

Cover image for Advanced TypeScript Exercises - Question 9

Pragmatic Maciej

Apr 25 '20

Advanced TypeScript Exercises - Question 9

#typescript #javascript

1 min read

Cover image for Advanced TypeScript Exercises - Answer 8

Pragmatic Maciej

Apr 22 '20

Advanced TypeScript Exercises - Answer 8

#typescript #javascript

1 min read

Cover image for Advanced TypeScript Exercises - Question 8

Pragmatic Maciej

Apr 6 '20

Advanced TypeScript Exercises - Question 8

#challenge #typescript #javascript

2 min read

Cover image for TypeScript Exercises Bonus🦠 - Answers Part 2

Pragmatic Maciej

Apr 3 '20

TypeScript Exercises Bonus🦠 - Answers Part 2

#typescript #javascript

3 min read

Pragmatic Maciej

Mar 28 '20

Tuples are ok

#typescript #javascript #webdev

3 min read

Cover image for TypeScript Exercises Bonus🦠 - Answers Part 1

Pragmatic Maciej

Mar 23 '20

TypeScript Exercises Bonus🦠 - Answers Part 1

#typescript #javascript

4 min read

Cover image for TypeScript Exercises Bonus🦠 - Type of Pandemia

Pragmatic Maciej

Mar 18 '20

TypeScript Exercises Bonus🦠 - Type of Pandemia

#typescript #javascript

4 min read

Pragmatic Maciej

Mar 13 '20

Advanced TypeScript Exercises - Answer 7

#javascript #typescript

2 min read

Pragmatic Maciej

Mar 11 '20

Advanced TypeScript Exercises - Question 7

#typescript #javascript

2 min read

Cover image for This is why TypeScript restricts + operator

Pragmatic Maciej

Mar 9 '20

This is why TypeScript restricts + operator

#typescript #javascript #beginners

4 min read

Pragmatic Maciej

Mar 8 '20

Advanced TypeScript Exercises - Answer 6

#typescript #javascript

2 min read

Pragmatic Maciej

Mar 4 '20

Advanced TypeScript Exercises - Question 6

#typescript #javascript

1 min read

Pragmatic Maciej

Mar 2 '20

Advanced TypeScript Exercises - Answer 5

#typescript #javascript

2 min read

Pragmatic Maciej

Feb 28 '20

Advanced TypeScript Exercises - Question 5

#typescript #javascript

2 min read

Pragmatic Maciej

Feb 22 '20

Advanced TypeScript Exercises - Answer 4

#typescript #javascript

2 min read

Pragmatic Maciej

Feb 20 '20

Advanced TypeScript Exercises - Question 4

#typescript #javascript

1 min read

Pragmatic Maciej

Feb 19 '20

Advanced TypeScript Exercises - Answer 3

#typescript #javascript

4 min read

Pragmatic Maciej

Feb 17 '20

Advanced TypeScript Exercises - Question 3

#typescript #javascript

1 min read

Pragmatic Maciej

Feb 14 '20

CSS in JS - have we done something wrong?

#discuss #javascript #css #typescript

2 min read

Pragmatic Maciej

Feb 12 '20

Advanced TypeScript Exercises - Answer 2

#typescript #javascript

2 min read

Pragmatic Maciej

Feb 11 '20

Advanced TypeScript Exercises - Question 2

#typescript #javascript

1 min read

Pragmatic Maciej

Feb 7 '20

Advanced TypeScript Exercises - Answer 1

#typescript #javascript

3 min read

Pragmatic Maciej

Jan 31 '20

Do you consider learning Elm?

#discuss #elm #javascript

1 min read

Pragmatic Maciej

Jan 27 '20

Mentoring? Would you be interested?

#discuss #typescript #javascript

1 min read

Pragmatic Maciej

Jan 27 '20

Long article, or many small ones. What do you prefer?

#discuss

1 min read

Pragmatic Maciej

Jan 24 '20

Advanced TypeScript series. Would you be interested?

#discuss #typescript #javascript

1 min read

Cover image for Algebraic Structures Explained - Part 3 Semigroup

Pragmatic Maciej

Jan 23 '20

Algebraic Structures Explained - Part 3 Semigroup

#typescript #javascript #elm #haskell

7 min read

Pragmatic Maciej

Jan 16 '20

Function flexibility considered harmful

#javascript #typescript #elm

6 min read

Pragmatic Maciej

Jan 5 '20

Algebraic Structures Explained - Part 2 - Magma

#elm #typescript #javascript #functional

2 min read

Pragmatic Maciej

Nov 7 '19

What is wrong with optional chaining and how to fix it

#typescript #javascript #webdev #functional

6 min read

Pragmatic Maciej

Nov 6 '19

What has optional chaining to Monads?

#typescript #javascript

1 min read

Pragmatic Maciej

Oct 27 '19

Answer: What is a domain specific language? Anybody using it? And in what way?

1 min read

Cover image for Modeling the state is your responsibility

Pragmatic Maciej

Oct 24 '19

Modeling the state is your responsibility

#typescript #javascript #react

4 min read

Pragmatic Maciej

Aug 14 '19

Data mutation in functional JavaScript

#javascript #functional #webdev

7 min read

Pragmatic Maciej

Jul 24 '19

More accurate the type, better the code

#typescript #javascript #webdev

5 min read

Pragmatic Maciej

Jul 1 '19

Not every function needs a name

#javascript #webdev #programming

4 min read

Cover image for Boolean - The Good, The Bad and there is no place for the Ugly

Pragmatic Maciej

Jun 27 '19

Boolean - The Good, The Bad and there is no place for the Ugly

#typescript #javascript #programming

3 min read