Henrique Barcelos hbarcelos

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

The right way to override any highlighting if you don't want to edit the colorscheme file directly

Generalities first

Suppose you have weird taste and you absolutely want:

your visual selection to always have a green background and black foreground,
your active statusline to always have a white background and red foreground,
your very own deep blue background.

Use the --ignore-application-stop-failures option with the AWS CLI tool while doing the deployment:

aws deploy create-deployment --application-name APPLICATION --deployment-group-name GROUP --ignore-application-stop-failures --s3-location bundleType=tar,bucket=BUCKET,key=KEY --description "Ignore ApplicationStop failures due to broken script"

Folder Structure

Please note

While this gist has been shared and followed for years, I regret not giving more background. It was originally a gist for the engineering org I was in, not a "general suggestion" for any React app.

Typically I avoid folders altogether. Heck, I even avoid new files. If I can build an app with one 2000 line file I will. New files and folders are a pain.

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

	# Ethereum helper methods
	# source this in your .bashrc or .zshrc file with `. ~/.ethrc`

	# --- Solidity sandbox ---
	# https://github.com/maurelian/solidity-sandbox
	scratch() {
	dir=$(pwd)
	cd ~/Documents/projects/solidity-sandbox \|\| exit
	bash newTest.sh $1
	cd "$dir" \|\| exit

	// List of language tags according to RFC 5646.
	// See <http://tools.ietf.org/html/rfc5646> for info on how to parse
	// these language tags. Some duplicates have been removed.
	var RFC5646_LANGUAGE_TAGS = {
	'af': 'Afrikaans',
	'af-ZA': 'Afrikaans (South Africa)',
	'ar': 'Arabic',
	'ar-AE': 'Arabic (U.A.E.)',
	'ar-BH': 'Arabic (Bahrain)',
	'ar-DZ': 'Arabic (Algeria)',

	plugin
	naming convention: name_of_plugin.vim
	these files are sourced for all file types

	doc
	naming convention: name_of_plugin.txt
	these files document the functionality of a plugin

	color
	naming convention: name_of_colorscheme.vim

	openssl rsa -in ~/.ssh/id_rsa -outform pem > id_rsa.pem
	chmod 600 id_rsa.pem