A2C | An Advantage Actor Critic Network for Continuous Control | Reinforcement Learning library

If there are n threads doing a read(uniqe_file[k], buffer, sizeof(buffer)) (k=1..n) (read from unistd.h) is there a chance that the content of buffer, after the threads are done, is messed up by having a combination of values from various files?

For example:
n = 2
buffer is a char array
unique_file[1] contains "abc"
unique_file[2] contains "123"
Then, can buffer contain, at the end, something like "a2c", or "12c" or even worse cases like "1a2"?

And, can you provide an explanation for the possible scenarios?

I'm running into this error when trying to run a command from docker a docker container on google compute engine.

Here's the stacktrace:

ABC is a music notation; I'm working on patterns to parse it as part of an app.

Sometimes multiple renditions of a tune are in an ABC file, and I need to get just the first rendition -- or in an ideal world any rendition I specify. The beginning of a rendition is signified by the X: string.

It's not possible to know in advance how many renditions are in a file.

In Javascript, how can I return, for example, the first rendition (from the first X: inclusive to the beginning of the second) in the example below, in a way that will return the first if there is no second, and return the first if there are more than two renditions.

My work so far yields ([\s\S]*)(?=X:) which succeeds in the two rendition example, but fails with a single rendition or more than two.

Adding an 'OR'd end of file condition to the lookahead lets the single rendition case work, but fails on the one and three rendition cases, e.g. \([\s\S]*)(?=X:|$)

Any help appreciated ... a good way to parse ABC will be used by many.

A two-rendition example can look like the below -- for a three rendition example just add a line with X: at the end, and for a single chop off everything from the second X:

EDITS: Folks have been kind enough to ask for better examples, and they won't fit in a comment, so here's a few

Broken pledge is interesting because it has more than one ABC and they're not numbered sequentially:

I am writing code in ReactJs I have an Array of object like this

I am using Firebase, React, Redux for my project and I want to send data from firebase to redux's global store using useEffect(). The problem I am facing is that I cannot access to methods and properties of an array even though I can use console.log(array) to get its element.

Let me briefly explain my code:

I'm assigning each group of images I get from database to its respective product and then send it to the redux global store.

My firebase structure:

I have a number of documents that look like the following where I need to change the permanentLocation.id and identify all circulationNotes where the id is null and set them to a uuid

To begin this topic off I've created a stock market environment that a function can return its observation through this function. The field 'df' is a pandas instance loaded from csv file and I am returning a step (row) of the data frame to get the data which return its value on the data sheet. My issue is when I set the data to the observation field it return different values then the data sheet.

I know that the Pong Game initializes to new game when one side scores 20 points.

By the way, the reward shows that it goes down below -20.
Why is that so?

One thing to expect is that after one side gets 20 points, the game is reset by playing one more time. Does the game need to get 21 points to initialize?

(Use 8 workers, A2C, PongNoFrameskip-v4)

I am making a comparison between both kind of algorithms against the CartPole environment. Having the imports as: