Heechul Ryu ryuheechul

Avoid multi Ifs with multiple Options

// don't do below:
if let(x) = fn_returns_option() {
 return x
}

// especially these:
if let(x) = fn_returns_option() {

Run inside a container

https://github.com/ryuheechul/gcloud

Setting defaults

https://cloud.google.com/artifact-registry/docs/gcloud-defaults

An example

gcloud config set compute/region europe-west2
gcloud config set compute/zone europe-west2-b

How Nix works

Nix is a purely functional package manager

/nix folder in my dotfiles repo

this is how I utilize nix to have better management of initial setup in terms of both logically and performantely better

How I package Docker image using Nix

My first attempt to package with Nix for a Docker image with Dockerfile

From Homebrew to Home Manager

Diagnosing slowness and tips:

Learn:

An attempt to make Windows 10/11 work for me by customizing/personalizing it

Why gist not dotfiles?

I use dotfiles to personalize *nix type of machines. But I'm new to personalizing Windows 10. So I'm collecting information here first before adding these to the dotfiles. I'm not sure if these will ever move to dotfiles though.

Enable WSL2

Change Author

https://www.git-tower.com/learn/git/faq/change-author-name-email/

A Quicker Way via `git-filter-repo`

copied from https://stackoverflow.com/a/60364176/1570165

git-filter-repo \
  --name-callback 'return name.replace(b"OldName", b"NewName")' \
 --email-callback 'return email.replace(b"old@email.com", b"new@email.com")'

https://blog.jeremylikness.com/blog/explore-wasi-from-your-browser/ https://training.linuxfoundation.org/announcements/how-wasi-makes-containerization-more-efficient/

	# this is based on my (not so desirable) experience with packer 1.6.6 in Feb 2021

	# you might want to read these pages to understand the situation below
	# - https://www.packer.io/docs/from-1.5/blocks/build/source
	# - https://www.packer.io/docs/from-1.5/blocks/build/provisioner
	# - https://www.packer.io/docs/from-1.5/blocks/source
	# - https://www.packer.io/docs/from-1.5/onlyexcept
	# - https://www.packer.io/docs/builders/vagrant

	locals { timestamp = regex_replace(timestamp(), "[- TZ:]", "") }

	package collection

	# Map

	my_add(x, y) = x + y

	map_add[x] = val {
	col := input.col
	delta := input.delta