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How to define recursive std::variant?

I used to ask a question about recursive std::variant. According to comments, recursive std::variant is an undefined behavior, so I tried some tricks to make re

Very simple function gives no output ( Python 3.7) [closed]

First-Timer here :) The very simple function geome(x) gives no output, eventhough the exact same code works fine outside of the function (see

Passing parameters in $emit is undefined

I am trying to pass parameters using $emit. to filter out my routes in my parent component. It is not working and on the console, this.$emit() returns undefined

Checking for numbers in a switch statement

Is there an easy way to check for digits 0-9 with a switch statement? I'm writing a program to check for certain characters as well as digits. Like checking f

Contracting with kronecker delta in sympy

I'm trying to do some tensor calculations in sympy, but I can't seem to get it to simplify any contractions of tensors against the kronecker delta, i.e. with th

How can I make an auto clicker with pyautogui only when I activate it

I have been wanting to make this for a while and have finally gotten around to it. But could not get it to work. I need it to be able to work on macOS Linux and

DispatchQueue deadlock clarification needed

Look at these two slightly similar cases: case 1: func test() { DispatchQueue.global().sync { print("a") DispatchQueue.main.sync { print("b")