skim | Fat-free client-side templates with Slim and CoffeeScript

I'm starting a Scala role in a few weeks yet I haven't written any Scala before (yes, my future employers know this), although I've written a lot of C# and Haskell. Anyway I was skimming through the Scala 3 book, and found this example:

Background:
I have been eyeing writing an application which needs very basic but fast graphics (just drawing lines and squares), and I'm probably going to use a library such as GLFW, or Vulkano if i'm going with Rust.

I want to understand a specific, and I guess quite practical, detail of the Vulkan API. I understand that GPUs can be quite a complicated topic, but I want to emphasize that I don't have any background in low-level graphics or Vulkan, so I understand if my question cannot be answered, or if my question does not even make sense. I'll try my best to use the correct terminology. I have to admit, I'm not the best at skimming through and looking at large amounts of source code I don't quite understand and still grasp the overall concept, which is why I hope I can find my answer here. I've tried looking at the source code for Vulkan and Mesa drivers, but it bore no fruit.

ORIGINAL Question:
I want to understand how an API call is propagated to the GPU driver.

I have searched around, but couldn't find the specifics I am searching for. The closest posts I've found are these two:
https://softwareengineering.stackexchange.com/questions/279069/how-does-a-program-talk-to-a-graphics-card
https://superuser.com/questions/461022/how-does-the-cpu-and-gpu-interact-in-displaying-computer-graphics

They both mention something similar to "In order to make the GPU do something, you have to make a call via a supported API". I know that, but neither of the two dig into the specifics of how that API call is made. Hopefully, the diagram below illustrates my question.

I'm using React with the CDN links, and have realized after a bit of a headache that I need to understand what is the global variable that has been configured for each library in order to use them.

For example in React-Redux, instead of:

Say, I have a dataset called iris. I want to create an indicator variable called sepal_length_group in this dataset. The values of this indicator will be p25, p50, p75, and p100. For example, I want sepal_length_group to be equal to "p25" for an observation if the Species is "setosa" and if the Sepal.Length is equal to or less than the 25th percentile for all species classified as "setosa". I wrote the following codes, but it generates all NAs:

I am completely new to RSocket.

I read the FAQ and the motiviations page (and skimmed the Protocol page) and understand that RSocket can be used on top of TCP, WebSocket and Aeron. But what I don't understand is what the differences are between using RSocket with these transports because all interaction-models can be used with each transport.

I am personally interested in using RSocket channel to enable bi-directional communication but don't know which transport I should use. For example what are the differences between RSocket (channel) + TCP and RSocket (channel) + WebSocket?

I couldn't find an answer anywhere, so I was hoping someone here could help me out.

Ty in advance.

I am having problems visualizing my data set. I skimmed through questions but couldn't quite find a suitable answer for myself. My data set has group names as columns and two rows of values. Here I am including an image of the data:

I need a boxplot with the row values on the x axis ("BodyGoal" and "BodySource") and the groups as bars (in such a way that for each x axis point there would be 3 bars representing the values from each group). Basically like this, preferably with hovering bars.

I am so sure that this is super easy to do but I am new to R and due to the pandemic I don't get to interact with my teachers as much, so I really need some help with this. Thank you in advance!

I run two lines but neither is giving me the solution I want:

barplot(t(bodydf), legend.text = T) (thanks to rawr), however this is giving me all my groups stacked on top of each other, i need them to be side by side I also have this but this is even further away than what I require: ggplot(stack(bodydf), aes(x=ind, y=values)) +geom_boxplot()

Move operations should be noexcept; in the first place for intuitive and reasonable semantics. The second argument is runtime performance. From the Core Guidelines, C.66, "Make move operations noexcept":

A throwing move violates most people’s reasonably assumptions. A non-throwing move will be used more efficiently by standard-library and language facilities.

The canonical example for the performance-part of this guideline is the case when std::vector::push_back or friends need to grow the buffer. The standard requires a strong exception guarantee here, and this can only move-construct the elements into the new buffer if this is noexcept - otherwise, it must be copied. I get that, and the difference is visible in benchmarks.

However, apart from this, I have a hard time finding real-world evidence of the positive performance impact of noexcept move semantics. Skimming through the standard library (libcxx + grep), we see that std::move_if_noexcept exists, but it's almost not used within the library itself. Similarly, std::is_noexcept_swappable is merely used for fleshing out conditional noexcept qualifiers. This doesn't match existing claims, for example this one from "C++ High Performance" by Andrist and Sehr (2nd ed., p. 153):

All algorithms use std::swap() and std::move() when moving elements around, but only if the move constructor and move assignment are marked noexcept. Therefore, it is important to have these implemented for heavy objects when using algorithms. If they are not available and exception free, the elements will be copied instead.

To break my question into pieces:

1. Are there code paths in the standard library similar to the std::vector::push_back, that run faster when fed with std::is_nothrow_move_constructible types?
2. Am I correct to conclude that the cited paragraph from the book is not correct?
3. Is there an obvious example for when the compiler will reliably generate more runtime-efficient code when a type adheres to the noexcept guideline?

I know the third one might be a bit blurry. But if someone could come up with a simple example, this would be great.

I am having hard time to understand that JSON.stringify drops off some data which is non-stringifiable fields while working in Node.js environment.

What I don't understand are :

1. If we have valid JSON and we are having value as function, we can't stringify it :

I've been using the pandoc executable to convert a markdown file to a man-page via