giljr

🔍 Comparison

Type of Analysis	When It Happens	Examples
Static	Before execution	RuboCop, Brakeman, RubyCritic, bundler-audit, flake8 (Python)
Dynamic / Runtime	During execution	RSpec, Minitest, SimpleCov, pytest, valgrind

giljr

Node	Meaning	Example
sbegin	sequence of expressions	top-level script
lvasgn	local variable assignment	name = ...
str	simple string	"Gilberto"
dstr	dynamic string (with interpolation)	"Hello, #{name}"
send	method call	puts ...

giljr

Type	When It Runs	Example Tools	What It Detects
Static Analysis	Before execution	RuboCop (Ruby), ESLint (JS), pylint (Python)	Style issues, unused variables, bad practices, security smells
Dynamic Analysis	While the program runs	RSpec, pytest, valgrind	Runtime errors, memory leaks, logic bugs

giljr

Connect To	Type	Use Case	Rails-compatible
XE	Container (CDB$ROOT)	Admin / system-level	❌
XEPDB1	Pluggable Database (PDB)	App data, user schemas	✅

giljr

File	Description	Direct label on page
instantclient-basic-linux.x64-21.13.zip	Runtime libraries (required)	“Basic Package (ZIP)”
instantclient-sdk-linux.x64-21.13.zip	Header files for compiling ruby-oci8	“SDK Package (ZIP)”
instantclient-sqlplus-linux.x64-21.13.zip	SQL*Plus CLI for testing	“SQL*Plus Package (ZIP)”

giljr

Rails + Tmux + Vim Quick Commands

Sym	Command	Description
🆕	tmux new -t rails	Create and attach a new tmux session named rails
⬆️	vim Gemfile	Open the Gemfile using Vim
⬇️	:tabe spec/rails_helper.rb	Open Rails configuration file in a new Vim tab
⬇️	:tabe spec/rspec_helper.rb	Open RSpec configuration file in a new Vim tab
⌨️	gt	Switch between open Vim tabs
⌨️	Ctrl + b, then Ctrl + Shift + %	Split tmux window into right panel (side-by-side)
⌨️	Ctrl + b → →	Move focus to the **rig

giljr

Concept	Meaning
Chained method	A sub-method added to a custom matcher with chain
Purpose	Extend matcher behavior with extra options or context
Example	expect(user).to have_error_message("can't be blank").on_field(:name)
Config effect	include_chain_clauses_in_custom_matcher_descriptions = true makes RSpec include .on_field(:name) in failure messages

giljr

Line	Meaning
require 'spec_helper'	Loads the basic RSpec configuration.
ENV['RAILS_ENV']	Ensures Rails runs in the test environment.
require_relative '../config/environment'	Loads the Rails application environment.
`abort("The Rails environmen

giljr

Category	👍	💬 Notes
Bundler & vendor	✅	/vendor/* and .bundle correctly ignored.
Environment files	✅	You’re ignoring .env and .env.* — good for security.
Logs & tempfiles	✅	Includes .keep exceptions — perfect for Rails conventions.
PID & storage dirs	✅	Very clean setup for /tmp/pids and /storage.
Public assets	✅	/public/assets is safely ignored — prevents committing precompiled assets.
Credentials	✅	`/config/maste

giljr

Line	Meaning
RSpec.configure do	Opens the RSpec configuration block — all settings go inside this.
config.expect_with :rspec do	Configures how expectations (expect) work.
expectations.include_..._descriptions = true	Improves custom matcher messages by including chained conditions for clearer failure output.
config.mock_with :rspec do	Configures RSpec’s mocking framework.