Why after adding elements to the document the addEventListener stop working?

I have two .addEvenetListener in my code but one of them stop working after adding a div to my document.addEventListener("mousemove", (e) => { mouseMove(e) }, false); document.body.addEventListener("click", function(e){ e = e || window.event; if (e.which == 1) fire(); }, false); function fire(){ let bullet = `<div class="bullet" style="left:${shooterPlace.x}px;top:${shooterPlace.y}px;"></div>`; document.getElementById("space").innerHTML += bullet; } After clicking, the… Read More Why after adding elements to the document the addEventListener stop working?

February 18, 2023 MRLeave a comment

map() shows new messages from state only if I type something into input

Every time I send a message, map() only shows my new message when I type something in the input (re-render). The listener works fine, it displays new messages in the console immediately after sending a new message, curiously, the messages state also updates when I look in React Developers Tools, But useEffect[messages] does not trigger… Read More map() shows new messages from state only if I type something into input

August 24, 2022 MRLeave a comment

Duda base de datos MySql

estoy tratando de descifrar como armar esta base datos, tengo la siguiente informació pero tengo dudas de donde colocar las claves foraneas ya que el esquema no está tan claro, agradeceria si me pudiesen dar una mano. Sobre todo en la relacion "one or many to one or many" con pregunta y etiqueta, un saludo.… Read More Duda base de datos MySql

May 25, 2022 MRLeave a comment

Copy folder with sub directory in Docker

I am trying to copy a folder with contents. But when trying to access the file from docker it shows error ERROR: Could not open requirements file: [Errno 2] No such file or directory: ‘requirements/development.txt’ FROM python ENV PYTHONUNBUFFERED=1 RUN apt-get update \ && pip install pip install gunicorn WORKDIR /usr/src/app COPY requirements/* /usr/src/app/ RUN… Read More Copy folder with sub directory in Docker

May 24, 2022 MRLeave a comment

Why is BigInt not a constructor function, unlike Number, Boolean and String?

Number, Boolean and String are constructor functions that correspond to those primitive types. BigInt is a function that corresponds to the BigInt primitive type, but it is not a constructor function. new BigInt(1n) // Uncaught TypeError: BigInt is not a constructor Why? >Solution : The functions for new primitive types (Symbol, BigInt) don’t get construction… Read More Why is BigInt not a constructor function, unlike Number, Boolean and String?

May 24, 2022 MRLeave a comment

Why is a column going into the next row when there are only 12 columns?

I have a row with 4 columns that are each 3 wide, which adds up to the 12 that are supposed the be in a row, but for some reason the last one is still going onto a new row. Any idea how to fix this? Here’s my code: <div class=”container text-center”> <h3>Welcome to “Ender’s… Read More Why is a column going into the next row when there are only 12 columns?

May 20, 2022May 27, 2022 MRLeave a comment

Shoot from gun in top down shooter Unity3D

Currently I made bullet shoot from players position. Problem is that it shoots from player’s center and not from the gun. I changed position of the bullet to make it shoot out from the gun. But the problem is that, when I start to rotate the player, bullet copies the rotation but not the position… Read More Shoot from gun in top down shooter Unity3D

May 19, 2022 MRLeave a comment

How to do a typewriter effect in rust

So I’m attempting to learn the basics of rust; and I thought a good way of doing that might be to convert an old python program of mine to rust! I was wondering if there was any way to get a typewriter effect. As it plays a key role in the program. Here’s the old… Read More How to do a typewriter effect in rust

May 17, 2022 MRLeave a comment

c++20 concepts: How can I use a type that may or may not exist?

I have begun a project that makes heavy use of c++20 concepts as a way of learning some of the new c++20 features. As part of it, I have a function template that takes a single argument and operates on it. I wish to have the flexibility to pass types to this function that specify… Read More c++20 concepts: How can I use a type that may or may not exist?

May 16, 2022 MRLeave a comment

Check if a key is in gun.js

For example, before I put something in the database I want to check if that entry is already there. I try to do this: gun.get(‘demograph’).once((data, key) => { console.log("realtime updates 1:", data); }); but I didn’t get a response if ‘demograph’ is or not in the database( for example to get true or false) I… Read More Check if a key is in gun.js

March 9, 2022 MRLeave a comment

Dev solutions

Solutions for development problems

Tag: gun