Questions tagged [functional-programming]
Use this tag for programs where "functional" style is important - likely making use of function composition and without side-effects. NOT simply because your code contains functions!
1,002 questions
4votes
1answer
102views
C# railway oriented programming with async support
In my application there are many business workflows. Most of them are quite simple and can be put in one function. A few of them however are very complex and have many business validations, require ...
- 235
3votes
2answers
118views
Base16/32/64 implementation for C++ ranges
Introduction The following code is an implementation of, in ambition, RFC 4648 compliant Base16, Base32 and Base64 conversions as range adaptors and constrained algorithms in C++23. It can be used at ...
- 791
2votes
0answers
70views
std::ranges compile time (and run time) RFC 4648 compliant Base16 conversions in C++23 (improved 2)
This increment This obsoletes a former version, after taking a great review into account: The encoding now preserves sized_range and ...
- 791
2votes
1answer
160views
Compile time (and run time) RFC 4648 compliant Base16 conversions as range adaptors in C++23 (improved) [duplicate]
Edit: obsoleted by an improved version. Edit: now updated with unit tests that show that this implementation also works for non-forward ranges, i.e. string streams, files streams, on-the-fly encoding/...
- 791
3votes
2answers
326views
Compile time (and run time) RFC 4648 compliant Base16 conversions as range adaptors in C++23
This obsoletes a former version and is obsoleted by an improved version. The following code is an implementation of, in ambition, RFC 4648 compliant Base16 conversions as range adaptors in C++23. It ...
- 791
4votes
1answer
210views
Hexadecimal conversions as range adaptors in C++23 that work at compile time (and run time) [duplicate]
This is obsoleted by a significantly better version. The following code is an implementation of hexadecimal conversions as range adaptors in C++23. It can be used at compile time, but should of course ...
- 791
5votes
3answers
231views
HackerRank, Haskell simple "compression" algorithm
The question asked is very straight-forward and is simple enough to solve. What I am looking for is that hopefully I can get some understanding for using the constructs and built-ins of the Haskell ...
- 780
4votes
6answers
422views
Search values by priority in a Stream
I have a simple list of results, and I need to return only one value depending on content, for example: ...
- 149
3votes
1answer
399views
Event sourcing javascript implementation
An event source built around an observer design pattern implementation… ...
user284150
1vote
1answer
70views
Buffered source of HTMLElement(s)
Temporary storing the element(s) returned by document.querySelector and document.querySelectorAll methods could improve ...
user284064
8votes
1answer
113views
Haskell 2-player TicTacToe terminal game
I want to get better at functional programming so I started with this simple 2-player TicTacToe game. Next I want to add a simple min-max algorithm to make it a 1-player game, but before that I'd like ...
- 183
8votes
3answers
2kviews
fmap for containers in c++
I implemented a simple fmap for containers. However containers don't have a unified function to add elements. So I wrote different concepts for different containers. Is there a better way to implement ...
- 83
3votes
1answer
101views
In Java, replace for loop with condition with lambdas [closed]
I want to replace a for loop with a break/return condition inside with a lambda. I think I have a good replacement, but I want ...
1vote
1answer
84views
Sprinkler effect
Developed around visibility CSS property and HTMLElement#offsetHeight and ...
user283117
4votes
3answers
223views
Get the contents of a table cell for all selected rows
I have a table of user info. When you click the button, I want to get the email address from each selected row, output into a comma-separated string. I got it to work with the following code, but I'm ...
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