c-vector | a simple vector library written in C. Can store any type | Build Tool library

This is a follow up on my previous question posted here (C++ vector of class objects and dynamic memory allocation).

Someclass is an oversimplified class for the sake of this example. Important to know that objects of this class are stored in a vector somewhere else.

Buffer is another class that has three types of members: regular variables (NAME), vectors (S), and pointers to dynamically allocated memory blocks (DATA).

If I comment v.erase(v.begin()+1); line then code compiles and runs fine. Bur erase produces a number of errors such as "use of deleted function Buffer& Buffer::operator=(const Buffer&)".

I think I understand the issue but do not know how to fix it. Would you please modify my example to make it work? Note, that the example is oversimplified and I need to keep these two classes and use of vectors.

Thank you.

I want to filter a column containing vectors on the entire contents of the cell. I've looked at R dplyr. Filter a dataframe that contains a column of numeric vectors, but my need is slightly different.

Sample df (full reprex below)

I've come across rxi/vec library for dynamic array implementation for C on GitHub.

I'm trying to run the sample program that is given in the README's usage section.

I've implemented the code like this

I am creating a user defined function that checks for whether the two column names that a user supplies into the function exists in a given data frame. There are three outcomes for the function: (1) both column names do not exist in the data frame; (2) var1 does not exist in the data frame, but var2 does; and (3) var2 does not exist in the data frame, but var1 does.

The function is as follows:

I have created a priority_queue with custom comparator which stores string in lexicographically sorted order, and it works as expected.[ Ref. this] ]

Now, I want it to be value in an unordered_map, and I got error: no matching constructor for initialization ... and closest thing I found is this. I realize I need to pass the comparator to the constructor as well, but how?

Here is my code as of now :

I want to create verilog testbench for the vhdl designs but my vhdl design source contains some enum type cannot accept by Vivado's mixed language boundary Ref. So I create a VHDL wrapper to convert enum type to std_logic_vector type or convert std_logic_vector to enum type. There are some elegant way to converting enum type to std_logic_vector Convert enum type to std_logic_vector VHDL. But How to converting std_logic_vector to enum type in VHDL?

As I'm new to react-native, I'm just trying to build a simple app in react-native that can navigate.

index.js

After reading C++ auto deduction of return type and C++ : Vector of template class, I'm still wondering how to do generic operations (e.g. operator << overload) on object. My code looks like

I try to implement that summing up all elements of a vector> in a non-loop ways.
I have checked some relevant questions before, How to sum up elements of a C++ vector?.
So I try to use std::accumulate to implement it but I find it is hard for me to overload a Binary Operator in std::accumulate and implement it.
So I am confused about how to implement it with std::accumulate or is there a better way?
If not mind could anyone help me?
Thanks in advance.