syk | Numerical simulation of the Sachdev-Ye-Kitaev fermion model | GPU library

I have two dataframe which I want to join normally i do inner_join which gives only the one which are present in both dataframe and rest and not shown in my output.

How to do innerjoin and keep all the rows and assign label

First dataframe

How should I modify Makefiles of DPDK to support c++ compilation? I tried by adding CFLAGS += -lstdc++ to the Makefile of the helloworld example but it seems not working. Is there a more standard way to do that?

Edited: I'm using the makefile of helloworld example in DPDK 20.08 with some small modifications. I'm building it on ubuntu 20.04 ,and which is not cross-compilation. The DPDK is built with dpdk-setup script and not meson. The makefile is

Here are the codes that I use:

I have downloaded stock data for the health care stocks of the S&P500 into a separate environment, now I would like to grab the Adjusted close column from each element of the environment and combine them into one data frame. I have written the following but I get an error:

I am currently attempting to run a for loop on about 500 stock tickers and attempting to create a chart for all of them. I have succeeded in doing this but my for loop breaks on this error Error in runSum(x, n) : n = 20 is outside valid range: [1, 5] I got the stock tickers from BatchGetSymbols library.

Here is my script at the bottom is my for loop: