I created an RPN calculator.

Input efficiency, more or less. It's also easier than implementing an infix-notation calculator. Here's an example:

I created an RPN calculator.

Not quite. Much more math-oriented.

Web-application: Where to start?

happyx might be a good choice.

How to test if a symbol is present?

By the way there is quite some info in the module-description of system.

How to test if a symbol is present?

Thanks both. The proc "declared" seems to do the trick...

Running procs from a list of procs

Great! I'll probably use the closure method only because I have not upgraded Nim in a long time and my version doesn't support std/tasks (2022?). This works for now, if more verbose: type MyTask = proc () {.closure.} proc hello(a: int) = echo a proc other(s: string) = e

Running procs from a list of procs

Easy to do with `std / tasks`. For example: import std / tasks proc hello(a: int) = echo a proc other(s: string) = echo s let myTasks = @[toTask(hello 3), toTask(other "abc)] for t in myTasks: invoke(t) Run

Running procs from a list of procs

Thank you! You are correct, a few of my procs will need to pass a parameter. I tried something like this: import macros proc test1() = echo "Hello" proc test2(i: int) = echo "World " & $i for p in [test1, test2]: if astToStr(p) == "test2": p(42)

Running procs from a list of procs

This works: proc test1 = echo "Hello" proc test2 = echo "World" for p in [test1, test2]: p() Run Note the dropped optional ()s for an empty parameter list. Before you were trying to "call" a "string" which is.. not something most people would expect to work. E

Running procs from a list of procs

Is it possible to make a list of proc names then loop through the list and run those procs. Perplexity.ai gave this answer which works: import tables proc test1() = echo "Hello" proc test2() = echo "World" let procTable = { "test1": test1

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