Hieu Nguyen hieunguyentrung

macOS setup

Install Xcode Command Line Tools

xcode-select --install

Install Homebrew

The Missing Package Manager for macOS (or Linux) — Homebrew

iTerm2

Downloads - iTerm2 - Mac OS Terminal Replacement

macOS setup

Install Xcode Command Line Tools

xcode-select --install

Install Homebrew

The Missing Package Manager for macOS (or Linux) — Homebrew

iTerm2

Downloads - iTerm2 - Mac OS Terminal Replacement

# postgesql
User.limit(5).order("RANDOM()")

# mysql
User.limit(5).order("RAND()")

https://hashrocket.com/blog/posts/rails-quick-tips-random-records

gem uninstall fileutils
gem update fileutils --default

params do
  requires :number, type: Integer, values: ->(v) { v.even? && v < 25 }
end

params do
  optional :category
  given category: ->(val) { val == 'foo' } do
    requires :description
 end

https://stackoverflow.com/questions/36190800/how-to-disable-sparse-checkout-after-enabled

Revert modified files: git checkout -f

Remove untracked files: git clean -fd

sparseCheckout

git config core.sparseCheckout true
echo -e "/*\n!node_modules" &gt;&gt; .git/info/sparse-checkout

	```
	gem uninstall --all --ignore-dependencies --executables
	gem install bundler
	gem update --system
	```

	```
	x = a.scan(/https\:\/\/i.pinimg\.com[\/\d\w]*\.jpg\s2x/)


	require 'open-uri'

	def download_image(url, dest)
	open(url) do \|u\|
	File.open(dest, 'wb') { \|f\| f.write(u.read) }
	end

	git update-index --assume-unchanged FILE_NAME

	https://fallengamer.livejournal.com/93321.html
	https://stackoverflow.com/questions/13630849/git-difference-between-assume-unchanged-and-skip-worktree#

	git assume-unchanged vs skip-worktree