donnie | Poloniex Trade Bot Toolkit | Bot library

The goal is to somewhat elegantly append multiple small tree diagrams in the shape of a matrix. I have prepared a simple version of the intended output; the rects and texts show what the pattern is supposed to look like. What needs to happen next is for a simple two-level tree plot to be appended below the rects.

I'm working with a data structure in which the tree data is stored in an object within each item of an array of objects:

I am reading about exception support in C++, probably the result applies to other languages as well.

https://wiki.osdev.org/C%2B%2B_Exception_Support

http://www.ucw.cz/~hubicka/papers/abi/node25.html

There is lots of stuff going on, I am a bit overwhelmed. My question is during the unwinding process, does C++ require help from kernel (e.g. setjmp/longjmp as mentioned in comments, these two functions don't involve kernel, however my question remains the same)? Or the entire process happen only in user space?

I could understand the unwinding of a local thread (think setjmp/longjmp) but is unable to grab how unwinding is done for remote thread.

If all the unwinding magic happens in user space, how can one thread modifies another faulty thread to send it over to handling code without kernel help? Since I believe the thread context information (task struct) lives inside kernel and disallows modification directly from user space, without access to thread context, how is it achieved? Thank you!

Update: It looks like I have some fundamental misunderstanding about the task struct. Just bumped into a slide about signal handling (signal handlers) (http://users.cms.caltech.edu/~donnie/cs124/lectures/CS124Lec15.pdf), upon entering a signal handler, the kernel stack is empty, all context information lives on user stack. I suppose one can use signal to communicate with other faulty thread to unwind? If that's the case, does it mean C++ exception support requires kernel help since generating signal is a kernel call?

Update: As far as the question goes, I am satisfied by Paul's answer. I would like to summarize my understanding on the topic in a broader sense, based on my reading on the comment/answer, please correct me if I am wrong.

C++ exception framework sdoesn't specify particular implementation method, below summary is what I would think it's "common".

There are three sources of exception object, the resulting unwinding is implemented as below:

I have a list of dictionaries written to a data.txt file. I was expecting to be able to read the list of dictionaries in a normal way when I load, but instead, I seem to load up a string.

For example - when I print(data[0]), I was expecting the first dictionary in the list, but instead, I got "[" instead.

Below attached is my codes and txt file:

read_json.py

I have started fiddling with python today for the first time in my life and I decided to make some sort of a lottery "game" where there's a pre-set list of registered users i.e. "players" that will be subject to validation by using the "player" variable. How can I use a loop to use the player variable input and search if it exists in the list players? Probably this is a very stupid question, but am curious how to do it or if there is another better/more faster way I would appreciate someone enlightening me. Thank you:

I want to pull a csv for the below url. There is a column where some of the value contain text with commas in them which is causing issues. For example in the columns below the last 2 items should be a single column but are being split

"""SL""","""2019-09-29""","""88.6""","""-0.6986""","""5.8034""","""Josh Phegley""",572033,542914,"""field_out""","""hit_into_play_score""",,,,,14,"""Josh Phegley grounds out"," second baseman Donnie Walton to first baseman Austin Nola. Sean Murphy scores. """

My code is as follows

I'm having trouble finding what Azure Cosmos DB supports in using npm gremlin and Tinkerpop. https://www.npmjs.com/package/gremlin The gremlin package makes no reference to client.submit scripts, however, the Azure Node.js sample code uses submit.
https://github.com/Azure-Samples/azure-cosmos-db-graph-nodejs-getting-started/blob/master/app.js

Also, when I use tinkerpop features like filter, elementMap, etc. in a client.submit, it throws an error that it can't find it. g.V().elementMap('age') This suggests to me that only certain Tinkerpop features work inside client.submit. I'm using the latest http://tinkerpop.apache.org/docs/3.4.4/reference/

I don't get any response from Azure on this topic. Can anyone shed some light on how to use the latest gremlin and tinkerpop with Azure Cosmos DB? If not latest, which specific versions of each are supported?

Thanks, Donnie

I want to list a lot of arrays from another file,

when I do a "for" to read any array inside.

The code compile do all the list, but when finish the last the code gave me is undefined. How do I fix that?.

I put images from the code. I let you both codes if you want

myFeatureProperty is is either true or false I want the filter to be true if it's value is true I tried this and I get an "emit validation error" (mapbox error doesn't say what is invalid):

let filter = ['==', ['get',"myFeatureProperty"],true, true, false]

Any idea why I get this error? I can't find any examples of this simple task. What is the proper expression syntax for mapbox-gl-js latest version?

Thanks, Donnie

I'm building a web component using the following command :