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.
Activity for mr Tsjolderâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
When to use custom iterators versus pointers I am working on a toy project where I have a container for which I would like to write an iterator that iterates over the values in the container. Because the values are stored in a (c-style) array, this would look something like this: ```c++ class MyClass { int data[10] {}; public: class M... (more) |
— | about 1 month ago |
| Answer | — |
A: How to overwrite lines of STDOUT in Python? You can use the carriage return control character `"\r"` to return to the beginning of the line and overwrite text. When using the `print` function you additionally have to make sure not to write the line feed control character (`"\n"`) is not printed. The easiest way to achieve this is probably to... (more) |
— | 8 months ago |
| Answer | — |
A: Regex for simplifying Amazon product URLs The following expression should capture the `{dp|gp}/$ID` part: ```plaintext https://www\.amazon\.com/([gd]p/[A-z0-9]{10}) ``` A quick explanation: - the `\.` are there to match periods only (otherwise it would match any symbol), - `[gd]p` matches either `gp` or `dp`, - `[A-z0-9]{10}` ... (more) |
— | 8 months ago |
| Question | — |
Are questions about (abstract) algorithms and datastructures considered on-topic? I just noticed this question about data structures in the Q&A. Although algorithms and data structures are often (part of) a solution to a problem when writing software, this question is constructed in a way that aims to leave out the software part entirely. Especially, because I have a strong feel... (more) |
— | 8 months ago |
| Answer | — |
A: Should self-answered Q&A use separate answers for different techniques/approaches (even if there's a caveat that applies overall)? I believe one of the main strengths of Q&A websites is that they provide a more digestible alternative to dense documentation. Especially for programmers who do not yet know how to find/use the documentation for the language that they are working with. The answer (and even the question [^1]) is/ar... (more) |
— | 8 months ago |
| Answer | — |
A: Best practices to write functions for both execution modes in Tensorflow, eager and graph mode Tensorflow functions should typically work on both eager and graph tensors. This means that you can just use the following implementation: ```python def lintodb(x: float | tf.Tensor) -> tf.Tensor: """ convert signal to noise ratio (SNR) from linear to dB """ return 10. tf.math.log(x) / ... (more) |
— | 8 months ago |
| Answer | — |
A: Listen for key events in a CLI app First of all, the standard keystroke for interrupting a CLI program would be `ctrl + C` or whatever the windows equivalent is. Therefore, you will get the most consistent user experience if you use this standard keystroke for interrupting the program (rather than something custom like space). One... (more) |
— | 9 months ago |
| Answer | — |
A: How can I properly type-hint methods in different files that would lead to circular imports? I eventually also found out that the `typing` module has a global variable `TYPECHECKING` that can be used to only import during type-checking. Concretely, the following code for `helpers.py` seems to type-check fine as well. ```python from typing import TYPECHECKING if TYPECHECKING: from ... (more) |
— | 9 months ago |
| Question | — |
How can I properly type-hint methods in different files that would lead to circular imports? I am writing a Python package where I have two classes in different files that (indirectly) depend on each other. If I wouldn't care about type-hints, there would be no problem, but unfortunately, I do like static type-hinting. Therefore, I need one class for typing the methods of the other and vic... (more) |
— | 9 months ago |
| Answer | — |
A: How to resolve a "ValueError: dimension 't' already exists as a scalar variable" arising when I am using xarray.Dataset.assign_coords()? It seems like what you want to do can be achieved by using ```python data.assigncoords(t=[0.123]) ``` The error message is extremely confusing in this respect, but it seems like the new value for the coordinate must have the same shape as the original coordinate value. In this case, `data.t.sh... (more) |
— | 9 months ago |
| Answer | — |
A: Readable syntax for executing many callables with useful side effects The `map` operation is a typical concept from the functional programming paradigm. However, side-effects are a typical example of something that does not fit functional programming well. As a result, `map` is probably not what you want to use. As an alternative, you can just use the `apply` meth... (more) |
— | 9 months ago |
| Answer | — |
A: How to compress columns of dataframe by function Since `pandas` uses `numpy` for these computations under the hood, I would have suggested to use `df.mean(keepdims=True)`, but apparently this has been explicitly disabled by `pandas`. However, after looking into the docs, I noticed you should be able to get the desired result as follows (note the... (more) |
— | 10 months ago |
| Answer | — |
A: Should we disallow ChatGPT-User crawler (and others) from scraping Software Codidact? A few thoughts from my side (as a ML researcher, without experience in LLMs): 1. I am not sure if it is really useful to block ChatGPT specifically. ChatGPT is only one of many LLMs out there. Blocking only ChatGPT will probably not prevent the data on codidact from being fed into other mo... (more) |
— | 10 months ago |
| Answer | — |
A: How can we grow this community? After a few years of casually using stack-exchange sites and wandering around on coda-dict, I feel there are mainly three components to the quality of the content on each of these sites: 1. the knowledge base 2. the community 3. the game The Knowledge Base I think most answers to this ques... (more) |
— | 10 months ago |
| Answer | — |
A: Slicing a dictionary using a string variable Assuming that `dynamicmodel` and `uncertainlibrary` are just (nested) dictionaries and ```python value = '"SCD"' ``` is actually supposed to be a string (note the single quotes here), your code would attempt to add a dictionary to a string, which is indeed not supported. Python would let you k... (more) |
— | 10 months ago |
| Question | — |
How to move a tag in git? I have created a tag in my project, using `git tag v2023` However, I forgot to commit a few changes. Now I would like to move this tag to the current point (after having committed the changes I had missed). According to the docs, it is possible to delete tags using `git tag -d v2023` Afte... (more) |
— | 10 months ago |
| Question | — |
How to use function composition for applying a function to first elements of a list? Can anyone explain to me why my Haskell function gives rise to a type-definition error? Originally, I wrote the following function to subtract one from the first `n` elements in a list: ```haskell decfirst :: Int -> [Int] -> [Int] decfirst 0 l = l decfirst n (x:xs) = (x-1):decfirst (n-1) xs `... (more) |
— | 10 months ago |