BuySell | BuySell - An ASP .Net MVC based Classifieds Website | Model View Controller library

I am trying to make a table with different types of rows but i am unable to change the height and width of the 1st row below header row. how can i change it? i tried setting height but it did not make any difference, the height of the code is changing only according to the font-size.

HTML code:

I am having trouble mapping array of arrays as lists in React.

Here is my current react code:

Trying to find an XPath to extract all Option nodes with values along with descendants such as //Option/VolatilityAndVarianceResults. This //* does not work...

The first node is shown below:

I took a pre made script for scraping values I was seeking off of craigstlist - and wanted to expand on this and scrape data from other forums (for example Pinkbike).

Original Script that works:

I have a nedb database trades.json where I am writing imaginary stock trades:

So I have this class called order, and when a user places an order i invoke that class. I have another class called orderbook, it is a vector of orders.

I wanted to try to traverse the orderbook upon receipt of a new order to check if there are duplicates, but right now i am stuck traversing the vector.

I am using the iterator and comparing the new order's symbol vs each order in my orderbook's symbol.

I read that the iterator is like a pointer and it will return the memory location of my vector's orders and *it would give me the order itself and if I add a .symbol to the it that should give me the order's symbol attribute, but right now it won't even compile.

I get this error when I try:

I'm trying to build a function that calculates trailing stop values using Close and ATR values from a pandas dataframe.

The dataframe for reference is as follows:

So below is my code. I am giving it several inputs but the important one is symbol and symbolList. symbolList is a 2D vector of strings. and the intent here is to check if symbol exists in symbolList and I am using the example from here: https://www.techiedelight.com/check-vector-contains-given-element-cpp/

Here is the code, error is on the if statement.

UPDATE: I reduced my code to the pivotal elements to shorten it

The function_impact_calc is very slow (26 secs for 100000 records dataframe). I think the main reason is the for loop (maybe apply or map will help?). Below I simulate the data, write impact_calc function and record run time.