randgen | js package for generating different kinds

The problem is that your access syntax is for a 2D array:

Its a simple javaScript mistake. You are overwriting const. The aspect of const is that the value can NOT be overwritten. change it to let.

Also, you get an element document.getElementById("score") but then automatically overwrite it as 0. Also also, doing parseInt(scoreKeeper.innerText) ?? 0 checks if you can parseInt the innerText rather then if the innerText exist. You should check if it exist first and then parseInt it.

You can use localStorage to solve your problem.
Save your sentence to localStorage like this:

A clean solution would be to generate an array of the two random numbers and then choose one of them randomly as shown below:

No. Why should LinqPad have a special handling for random numbers that makes it incompatible with other applications?

It will compile each query into a separate assembly and initialize the static variables only once. In order to unload the assembly, it would need to destroy the AppDomain which contains the assembly.

Thus, it could also have been possible that it creates an AppDomain per query and re-uses that AppDomain for subsequent runs. But with a check of AppDomain.CurrentDomain, that does not seem to be the case. So we have 1 AppDomain and multiple assemblies.

You can confirm this by putting a Console.WriteLine("Test"); into the code so that it needs recompilation. You'll get a new number.

Use StringBuilder as you build your solution:

It works because of the properties of the Int and Color types, not because of the properties of Point. If one suppresses the Eq clause of Point, it still works.

Your code is overall quite good, however I would mention a few minor caveats.

In the Random instance for Point, you are chaining the generator states manually; this is a bit error prone, and monadic do notation is supposed to make it unnecessary. The Color instance could be simplified.

You are using IO where it is not really required. IO is just one instance of the MonadRandom class. If g is an instance of RandomGen, any Rand g is an instance of MonadRandom.

The random values you're getting are not reproducible from a program execution to the next one; this is because getStdGen implicitly uses the launch time as a random number generation seed. It may do that because it is IO-hosted. In many situations, this is a problem, as one might want to vary the choice of random sequence and the system parameters independently of each other.

Using monadic style, the basics of your code could be rewritten for example like this:

The problem is not your random number generator's state. The problem is your distribution's state. Yes, distributions can have state too.

You can get the same values by resetting the normal distribution's state with reset. Alternatively, you can preserve and reconstitute the distribution's state too, using << and >>.

The solution is,