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@spalladino
spalladino / falsehoods-that-ethereum-programmers-believe.md
Last active February 9, 2026 03:46
Falsehoods that Ethereum programmers believe

Falsehoods that Ethereum programmers believe

I recently stumbled upon Falsehoods programmers believe about time zones, which got a good laugh out of me. It reminded me of other great lists of falsehoods, such as about names or time, and made me look for an equivalent for Ethereum. Having found none, here is my humble contribution to this set.

About Gas

Calling estimateGas will return the gas required by my transaction

Calling estimateGas will return the gas that your transaction would require if it were mined now. The current state of the chain may be very different to the state in which your tx will get mined. So when your tx i

@abdallahokasha
abdallahokasha / Install_robo3t_Ubuntu.md
Last active April 8, 2025 13:16
Install Robo3t on Ubuntu18.04 and make a desktop icon for it

Install Robo3t On Ubuntu 18.04

Download the package form Robo3t or using wget
wget https://download.robomongo.org/1.2.1/linux/robo3t-1.2.1-linux-x86_64-3e50a65.tar.gz
Extract here using

tar -xvzf robo3t-1.2.1-linux-x86_64-3e50a65.tar.gz

@cecilemuller
cecilemuller / 2019-https-localhost.md
Last active January 26, 2026 09:00
How to create an HTTPS certificate for localhost domains

How to create an HTTPS certificate for localhost domains

This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.

Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).

@ziadoz
ziadoz / install.sh
Last active February 17, 2026 23:47
Install Chrome, ChromeDriver and Selenium on Ubuntu 16.04
#!/usr/bin/env bash
# https://developers.supportbee.com/blog/setting-up-cucumber-to-run-with-Chrome-on-Linux/
# https://gist.github.com/curtismcmullan/7be1a8c1c841a9d8db2c
# https://stackoverflow.com/questions/10792403/how-do-i-get-chrome-working-with-selenium-using-php-webdriver
# https://stackoverflow.com/questions/26133486/how-to-specify-binary-path-for-remote-chromedriver-in-codeception
# https://stackoverflow.com/questions/40262682/how-to-run-selenium-3-x-with-chrome-driver-through-terminal
# https://askubuntu.com/questions/760085/how-do-you-install-google-chrome-on-ubuntu-16-04
# Versions
CHROME_DRIVER_VERSION=`curl -sS https://chromedriver.storage.googleapis.com/LATEST_RELEASE`
@beeman
beeman / remove-all-from-docker.sh
Created November 15, 2016 03:04
Remove all from Docker
# Stop all containers
docker stop `docker ps -qa`
# Remove all containers
docker rm `docker ps -qa`
# Remove all images
docker rmi -f `docker images -qa `
# Remove all volumes
@branneman
branneman / better-nodejs-require-paths.md
Last active February 3, 2026 09:31
Better local require() paths for Node.js

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

@jboonstra
jboonstra / buster.php
Created July 22, 2013 13:10
cache-busting
<?php
// assumes SITE_VERSION, BASEPATH constants are set; assumes CodeIgniter configuration
function buster($url) {
if (!($url && is_scalar($url))) {
return '';
}
// trim off any leading '/' in the URL; we'll re-add it later
$url = ltrim($url, '/');