packrat | Packrat is a dependency management system for R

In "Packrat Parsing: a Practical Linear-Time Algorithm with Backtracking" on page 30 the author states that the context-free grammar (CFG):

I’m creating a Shiny app that uses the caret package to do some SVM free-text analysis.

The app runs fine without any error in my computer. I’m using R x64 4.0.4 and R studio 1.3.1093

I’m deploying app to an internal enterprise server https://rconnect.xxxx.com/connect/#/apps/####

This app is deployed in the server and started.
But when I reach the line where I run the train function:

I am working on a toy language for fun, (called NOP) using Bison and Flex, and I have hit a wall. I am trying to parse sequences that look like name1.name2 and name1.func1().name2 and I get a lot of reduce/reduce conflicts. I know -why- am getting them, but I am having a heck of a time figuring out what to do about it.

So my question is whether this is a legitimate irregularity that can't be "fixed", or if my grammar is just wrong. The productions in question are compound_name and compound_symbol. It seems to me that they should parse separately. If I try to combine them I get conflicts with that as well. In the grammar, I am trying to illustrate what I want to do, rather than anything "clever".

I am working on an R Shiny project to visualize the spread of COVID19 around the world. When I run the app locally, it works just fine, but when I try to deploy the app, it runs into issues which I am assuming are related to storing the shapefiles: I get an error on the map page that reads, "An error has occurred. Check your logs or contact the app author for clarification."

Here is my code so far:

I was developing a shiny-app on a Windows machine in Rstudio. Now I need to develop it on a Linux machine and later on will need to deploy it on a server. Because of the need to run the app across platforms, I was looking into some environment control application so that I don't have to tune and reinstall the needed packages manually.

I tried to use Packrat for this purpose. I made a snapshot on my Windows machine, copied and pasted the project to my Ubuntu, reopened the project on RStudio, installed Packrat and the restore of the packages ran automatically. Then I ran into an issue that some of the packages that requires system dependencies were not installed automatically, e.g. rgdal and jqr. Therefore, I had to manually install those system dependencies manually in a terminal (it took me a while because there were about 10 of them that requires extra system dependencies).

I am wondering if there is an easier way to just automatically handle this. Later on, I will need to work with a system administer to deploy the app to the server. I am wondering if Packrat has the capability of automatically installing system dependencies on Linux machine/server. If anyone has encounter this issue before, or have other better options, please let me know!

Thank you!

I had a parser that worked well in Scala Packrat parser combinators. I would like to try something faster with the Fastparse library. However, it cannot handle left-recursion infinite loops. Is there any standard way to cope with that?

I'm new to Docker and I'm trying to understand the following setup.

I want to debug my docker container to see if it is receiving AWS credentials when running as a task in Fargate. It is suggested that I run the command:

I am using the virtualstaticvoid buildpack for heroku, but it is on the heroku-16 stack and only supports up to version 3.4.4 of R. I am after a buildpack that works on the latest stack (heroku-18) and supports at least version 3.6 of R, and has no outdated dependencies. The hmdc buildpack appears to support heroku-18 and version 3.6.0 of R, but requires packrat which is soft deprecated in favour of renv.