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the npm package I am using

Hello All! I am trying to implement a cart for a simple website that fetches from an API. So my render method looks something like this...

I am using Pandas to read a CSV file, Forex to convert the currency to other currencies and the integer mode (int) to remove the decimal division, but it gave an error.

Sample CSV:

I am having initialization trouble with an exchange rate structure. In the method getRates I have been trying to implement dictionary key / value logic to copy exchange rates into an ordered array. I am getting the error "Variable 'moneyRates' used before being initialized". I tried adding a memberwise initializer but was unsure how to initialize the rate array. I have also been wondering if I should move the instance of MoneyRates to the top of the class instead of in the getRates method.

Below is my entire function:

I would like the last field to have 50px border radius on the right. Why is this not working?

I am trying to learn Common Lisp with the book Common Lisp: A gentle introduction to Symbolic Computation. In addition, I am using SBCL, Emacs, and Slime.

In Chapter 8, the author presents the concept of recursion. More specifically, he shows cad/cdr recursion on trees. One of the exercises about this topic is how to flat a nested list:

The odd thing appears in the answer-sheet showing this as the correct answer:

The book's answer-sheet solution does not generate the expected result with the example provided on the question under my environment.

Context:

I am querying daily foreign exchange rate. Currently, we get the info via an API that only runs starting at a specific time of day. However, I would like to be able to show the exchange rate even before the data is available.

So, for example, let's say the API grabs the data at 7am local time, meaning that if I want to query the foreign exchange rate before 7am, nothing would show since the backend script hasn't begun loading the data into the database. Since I have no access to backend, I want to use a workaround using SQL to retrieve yesterday's rate instead until today's rate is available.

Below is how the table looks:

I have a large dataset with various currencies. As for visualisation purpose I would like to display the full name of the currencies and not the ISO-4217-Code (currency code).

Let me take the following excerpt of the data:

My Application displays a lot of lines and polygons/paths on a canvas. My ViewModel holds a series of ObservableCollections that represent different items to be drawn.

The issue I have is the application is very slow to zoom and pan. Zoom and pan is all taken care of using an IvalueConverter and converts from world coordinate system to the canvas coordinate system.

For this to work, I have to NotifyPropertyChange all objects visible on the screen to force them to be redrawn with the latest pan and zoom values. It works very well for a few hundred lines, but for thousands it’s very slow. And if you zoom out so all objects are visible therefore subject to NotifyPropertyChange it’s almost unusable with over 10,000 lines.

I’m not using the polygons built-in features in any way as all handling, selection moving etc is taken care of in the viewmodel. I therefore want to try and use DrawingVisual instead of Shapes as I understand they have much lower overheads but I can’t find any good MVVM examples of how to use them. Examples I have seen show them being built in codebehind which isn’t how I think I should be using them.

Examples as follows: