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

194 35

4 min read

Pragmatic Maciej

Feb 25 '20

TypeScript is more than you think

#typescript #javascript

615 12

11 min read

Pragmatic Maciej

Feb 6 '20

Advanced TypeScript Exercises - Question 1

#typescript #javascript

202 14

1 min read

Pragmatic Maciej

Sep 24 '19

Algebraic Structures Explained - Part 1 - Base Definitions

#javascript #typescript #elm #functional

39 1

8 min read

Pragmatic Maciej

May 28

Helper - the architecture whole

#python #django

2 min read

Advanced TypeScript Exercises - Question 6

Tnx Nikita for your feedback. Maybe will get back to the seri...

Aug 14

Programming Tip #1: Avoid Primitives, Use Product Types

Languages which support named function arguments support this...

May 1

How to spoof your timezone in Google Chrome

Hey, just found that when needed it most. Tnx

Nov 2 '21

Stop Writing JavaScript Like This

Such posts always inspire me to write another article why rad...

Oct 15 '21

Special kind of array in Typescript - Tuple

Tuple is not Array in general definition. Tuple is implemente...

Sep 26 '21

Why Functional Programmers Avoid Exceptions

Promise is composable but also does eagerly side effects and ...

Jul 12 '21

Why Functional Programmers Avoid Exceptions

Everything depends from the context. If you work with highly ...

Jul 12 '21

Why I Don't Use Async Await

I think when you say "imperative" you mean "statement based",...

Jun 24 '21

View all 202 comments

Pragmatic Maciej

Oct 9 '21

Return statement is ok

#javascript #webdev #codequality #elm

21 2

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

Pragmatic Maciej

Mar 13 '21

Hide the constant, abstract the code

#javascript #programming #react

9 3

3 min read

Pragmatic Maciej

Jan 28 '21

The lonely constant

#programming #javascript #typescript

21 3

2 min read

Pragmatic Maciej

Jan 12 '21

The state you've never needed

#react #javascript #typescript

27 15

5 min read

Pragmatic Maciej

Nov 2 '20

Advanced TypeScript Exercises - Answer 10

#challenge #typescript #javascript #webdev

8 1

2 min read

Pragmatic Maciej

Oct 23 '20

Advanced TypeScript Exercises - Question 10

#challenge #typescript #javascript #webdev

34 6

1 min read

Pragmatic Maciej

Oct 18 '20

Grow up

#watercooler #career

51 3

6 min read

Pragmatic Maciej

Aug 17 '20

Advanced TypeScript Exercises - Answer 9

#typescript #javascript

17 1

1 min read

Pragmatic Maciej

Jul 6 '20

Mutation is ok

#typescript #javascript #functional #webdev

97 15

4 min read

Pragmatic Maciej

Jul 3 '20

A pinch of magic🧙‍♂️

#javascript #react #functional #elm

13 1

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

29 18

4 min read

Pragmatic Maciej

May 6 '20

Maybe just Nullable?

#javascript #typescript #webdev #functional

46 7

13 min read

Pragmatic Maciej

Apr 25 '20

Advanced TypeScript Exercises - Question 9

#typescript #javascript

32 5

1 min read

Pragmatic Maciej

Apr 22 '20

Advanced TypeScript Exercises - Answer 8

#typescript #javascript

24 2

1 min read

Pragmatic Maciej

Apr 6 '20

Advanced TypeScript Exercises - Question 8

#challenge #typescript #javascript

15 5

2 min read

Pragmatic Maciej

Apr 3 '20

TypeScript Exercises Bonus🦠 - Answers Part 2

#typescript #javascript

16 4

3 min read

Pragmatic Maciej

Mar 28 '20

Tuples are ok

#typescript #javascript #webdev

45 13

3 min read

Pragmatic Maciej

Mar 23 '20

TypeScript Exercises Bonus🦠 - Answers Part 1

#typescript #javascript

10 8

4 min read

Pragmatic Maciej

Mar 18 '20

TypeScript Exercises Bonus🦠 - Type of Pandemia

#typescript #javascript

18 1

4 min read

Pragmatic Maciej

Mar 13 '20

Advanced TypeScript Exercises - Answer 7

#javascript #typescript

53 7

2 min read

Pragmatic Maciej

Mar 11 '20

Advanced TypeScript Exercises - Question 7

#typescript #javascript

13 4

2 min read

Pragmatic Maciej

Mar 9 '20

This is why TypeScript restricts + operator

#typescript #javascript #beginners

32 1

4 min read

Pragmatic Maciej

Mar 8 '20

Advanced TypeScript Exercises - Answer 6

#typescript #javascript

13 6

2 min read

Pragmatic Maciej

Mar 4 '20

Advanced TypeScript Exercises - Question 6

#typescript #javascript

50 6

1 min read

Pragmatic Maciej

Mar 2 '20

Advanced TypeScript Exercises - Answer 5

#typescript #javascript

14 2

2 min read

Pragmatic Maciej

Feb 28 '20

Advanced TypeScript Exercises - Question 5

#typescript #javascript

67 6

2 min read

Pragmatic Maciej

Feb 22 '20

Advanced TypeScript Exercises - Answer 4

#typescript #javascript

26 2

2 min read

Pragmatic Maciej

Feb 20 '20

Advanced TypeScript Exercises - Question 4

#typescript #javascript

38 7

1 min read

Pragmatic Maciej

Feb 19 '20

Advanced TypeScript Exercises - Answer 3

#typescript #javascript

47 6

4 min read

Pragmatic Maciej

Feb 17 '20

Advanced TypeScript Exercises - Question 3

#typescript #javascript

17 7

1 min read

Pragmatic Maciej

Feb 14 '20

CSS in JS - have we done something wrong?

#discuss #javascript #css #typescript

71 31

2 min read

Pragmatic Maciej

Feb 12 '20

Advanced TypeScript Exercises - Answer 2

#typescript #javascript

44 7

2 min read

Pragmatic Maciej

Feb 11 '20

Advanced TypeScript Exercises - Question 2

#typescript #javascript

19 6

1 min read

Pragmatic Maciej

Feb 7 '20

Advanced TypeScript Exercises - Answer 1

#typescript #javascript

74 5

3 min read

Pragmatic Maciej

Jan 31 '20

Do you consider learning Elm?

#discuss #elm #javascript

9 35

1 min read

Pragmatic Maciej

Jan 27 '20

Mentoring? Would you be interested?

#discuss #typescript #javascript

6 5

1 min read

Pragmatic Maciej

Jan 27 '20

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

#discuss

3 7

1 min read

Pragmatic Maciej

Jan 24 '20

Advanced TypeScript series. Would you be interested?

#discuss #typescript #javascript

57 16

1 min read

Pragmatic Maciej

Jan 23 '20

Algebraic Structures Explained - Part 3 Semigroup

#typescript #javascript #elm #haskell

14 3

7 min read

Pragmatic Maciej

Jan 16 '20

Function flexibility considered harmful

#javascript #typescript #elm

10 1

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

26 9

6 min read

Pragmatic Maciej

Nov 6 '19

What has optional chaining to Monads?

#typescript #javascript

7 3

1 min read

Pragmatic Maciej

Oct 27 '19

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

9 2

1 min read

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

22 9

5 min read

Pragmatic Maciej

Jul 1 '19

Not every function needs a name

#javascript #webdev #programming

38 6

4 min read

Pragmatic Maciej

Jun 27 '19

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

#typescript #javascript #programming

71 11

3 min read

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Recent comments

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