Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »

Welcome to Software Development on Codidact!

Will you help us build our independent community of developers helping developers? We're small and trying to grow. We welcome questions about all aspects of software development, from design to code to QA and more. Got questions? Got answers? Got code you'd like someone to review? Please join us.

Posts by Dirk Herrmann‭

32 posts
89%
+15 −0
Meta Questions easily answered by studying a beginner-level book

What if a question is beginner level? I would say: Someone should answer it. Some of the beginner level questions on stackoverflow have received answers that explain things in wonderful ways. Be...

posted 2y ago by Dirk Herrmann‭  ·  edited 1y ago by Alexei‭

Answer
85%
+10 −0
Q&A How to proportionally convert a number in the range of -1 and 1 to a number in the range of 0 and 319

There is one thing to clarify when mapping a float interval to an integer interval, namely how the boundaries of the float interval shall be mapped to the boundaries of the integer interval. Takin...

posted 1y ago by Dirk Herrmann‭  ·  edited 1y ago by Dirk Herrmann‭

Answer
83%
+8 −0
Code Reviews Solving logical puzzle with negation and undefined aspects in Prolog

Assume this trivial logic puzzle which I have made up: There are three boys, Fred, John and Max. No two of the boys have the same age. Max is older than John. Fred is not the oldest one. Quest...

0 answers  ·  posted 2y ago by Dirk Herrmann‭  ·  edited 2y ago by Dirk Herrmann‭

Question prolog
83%
+8 −0
Q&A How to use grep to print only specific word from a string

grep is not the right tool for your case. You can use basename: basename a/b/c --> c basename a/b/c/ --> c or, in your case basename branches/features/arm_and_musl --> arm_...

posted 2y ago by Dirk Herrmann‭

Answer
83%
+8 −0
Q&A Vim: how to search for all instances of a string, except for those that are between two specific strings

As @Quasímodo‭ has shown, the search pattern \(abc.*\)\@<!bird\|bird\(.*xyz\)\@! solves your problem. But, why does it work, and why does your original approach not work? What you want to achi...

posted 2y ago by Dirk Herrmann‭

Answer
77%
+5 −0
Q&A grep AND search for multiple words in files

From your description ... I have text (xml actually) files. Some files contain 'foo', some contain 'bar', some contain neither and some contain both. It's the both I'm interested in. ... I co...

posted 1y ago by Dirk Herrmann‭  ·  edited 1y ago by Dirk Herrmann‭

Answer
77%
+5 −0
Meta Should we allow answers generated by ChatGPT?

The expectation for all posts is, that a post is always understood as the own work of the poster, who has the copyright and responsibility for it and offers it to the site according to the site's c...

posted 1y ago by Dirk Herrmann‭

Answer
77%
+5 −0
Q&A How this recursive treewalker works?

Note: This answer was written for a version of the question that focused on getting rid of the if-else, rather than on an explanation of the workings of the recursive tree-traversal. One way of ge...

posted 2y ago by Dirk Herrmann‭  ·  edited 2y ago by Dirk Herrmann‭

Answer
77%
+5 −0
Q&A How this recursive treewalker works?

To understand the concept of recursive tree traversal, I would like to give you an analogy. Imagine a labyrinth of rooms connected like a tree structure. That is, there is an entry to the first r...

posted 2y ago by Dirk Herrmann‭  ·  edited 2y ago by Dirk Herrmann‭

Answer
77%
+5 −0
Q&A Explaining the result of an arithmetic expression in JavaScript

The concept that is important to understand here is the concept of operator precedence. Assume you have an expression a + b * c. What does it mean? You could have the following options: (a + b) ...

posted 2y ago by Dirk Herrmann‭  ·  edited 2y ago by Dirk Herrmann‭

Answer
77%
+5 −0
Q&A Create a list of Niven numbers in Python

The way your code handles the variable i within the for loop seems to indicate a wrong understanding of the meaning of for i in range(1,n+2): range(1,n+2) will provide an object of type range. ...

posted 2y ago by Dirk Herrmann‭  ·  edited 2y ago by Dirk Herrmann‭

Answer
77%
+5 −0
Q&A What does a variable followed by parentheses ("ptr()") mean?

What does ptr() mean in this code? An expression like ptr followed by parentheses as in ptr() is a function call. In your example, ptr is a variable of type "pointer to function" because of t...

posted 2y ago by Dirk Herrmann‭  ·  edited 2y ago by Dirk Herrmann‭

Answer
75%
+4 −0
Code Reviews A state machine in Python

Some thoughts about your design / code (not repeating what was already said by Derek): You have chosen member _observers of class State to be a list, and member function register to append to ...

posted 2y ago by Dirk Herrmann‭

Answer
75%
+4 −0
Q&A Can freed pointers undergo lvalue conversion?

I see it such that it is undefined behavior (I refer to N1570 as the OP https://port70.net/~nsz/c/c11/n1570.html): After free(p), the lifetime of the object pointed to has ended (7.22.3p1: "The li...

posted 1y ago by Dirk Herrmann‭

Answer
75%
+4 −0
Q&A How to open a file and edit its content in groovy script

One simple possibility to eliminate a set of lines with precisely known content is to use the patch tool. The below code shows an example shell script. The script calls patch on the file to be mo...

posted 2y ago by Dirk Herrmann‭

Answer
75%
+4 −0
Code Reviews Measuring the impact of using exceptions instead of return values in an ASP.NET Core application

Since your code performs a data base operation, the cost of this operation is likely dominating the execution time. The cost of both a return or an exception may be negligible compared to that ope...

posted 2y ago by Dirk Herrmann‭

Answer
75%
+4 −0
Q&A Should I check if pointer parameters are null pointers?

To extend a bit on some points already mentioned: Regarding where to add checks on a case by case basis: If you have a static code analysis tool that can give you information about areas where pro...

posted 2y ago by Dirk Herrmann‭

Answer
75%
+4 −0
Code Reviews A class to access dicts using attribute syntax

I like the idea, but more as an exercise or a demonstration what can be done with Python. I also like that the code comes with a set of test cases which are written in a way that they nicely serve...

posted 2y ago by Dirk Herrmann‭

Answer
71%
+3 −0
Q&A Do you need to use std::move to store a parameter passed by value?

Update: Distinguished between the general case and cases (as with std::string) where it is known that there are no side effects. In the general case, the substitution of the call to a copy constru...

posted 2y ago by Dirk Herrmann‭  ·  edited 2y ago by Dirk Herrmann‭

Answer
71%
+3 −0
Q&A Is there any benefit to using new?

Well, you still need (placement) new for the implementation of the smart pointers themselves. You would also use it (or malloc) to implement custom allocators, for example: https://www.boost.org/d...

posted 2y ago by Dirk Herrmann‭

Answer
71%
+3 −0
Q&A Cast uninitialized variable to (void)

It is undefined according to my reading of the standard (I am referring to the latest public draft). int x; (void)x; In the second line, (void)x is a full expression, but x by itself is alread...

posted 2y ago by Dirk Herrmann‭  ·  edited 1y ago by Dirk Herrmann‭

Answer
71%
+3 −0
Q&A C naming convention, module trigrams?

Starting with the goals: A naming convention typically aims at supporting several, partly contradictory goals, among which are the following: Compliance with the limitations of the language stan...

posted 1y ago by Dirk Herrmann‭  ·  edited 1y ago by Dirk Herrmann‭

Answer
71%
+3 −0
Q&A How to delete contents of a specific field, if it matches a pattern and there is nothing else in the field

For the regular expression to only match a full field of hyphens, you have, as others already have explained, to put the ^ anchor at the begin of the regular expression and the $ anchor at the end ...

posted 2y ago by Dirk Herrmann‭

Answer
71%
+3 −0
Code Reviews Detecting balanced parentheses in Python

Is this a good approach? How can I improve my algorithm? Your code is correct and simple. That is good, and it may be all that is needed. You have received some responses that indicate that ...

posted 2y ago by Dirk Herrmann‭  ·  edited 5mo ago by Dirk Herrmann‭

Answer
71%
+3 −0
Q&A What are disadvantages of static functions (ie functions with internal linkage) in C?

There are some reasons why a function would intentionally not be declared static. (In the following I use the term 'module', but in contrast to others, I use it not to describe a file or translati...

posted 11mo ago by Dirk Herrmann‭  ·  edited 11mo ago by Dirk Herrmann‭

Answer