Merge 295fe153ad into 8b3ef4872c

Hello, I've added a small blockquote below the description to indicate that this method of accessing an indefinite number of function arguments has been superseded by the use of the spread operator via rest parameters for ES6+ compatibility.

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
 
-_1569 TILs and counting..._
+_1571 TILs and counting..._
 
 See some of the other learning resources I work on:
 - [Ruby Operator Lookup](https://www.visualmode.dev/ruby-operators)
@@ -200,6 +200,7 @@ See some of the other learning resources I work on:
 - [Check The Syntax Of nginx Files](devops/check-the-syntax-of-nginx-files.md)
 - [Connect To An RDS PostgreSQL Database](devops/connect-to-an-rds-postgresql-database.md)
 - [Determine The IP Address Of A Domain](devops/determine-the-ip-address-of-a-domain.md)
+- [Hatchbox Exports Env Vars With asdf](devops/hatchbox-exports-env-vars-with-asdf.md)
 - [Path Of The Packets](devops/path-of-the-packets.md)
 - [Push Non-master Branch To Heroku](devops/push-non-master-branch-to-heroku.md)
 - [Reload The nginx Configuration](devops/reload-the-nginx-configuration.md)
@@ -953,6 +954,7 @@ See some of the other learning resources I work on:
 - [All or Nothing Database Transactions](rails/all-or-nothing-database-transactions.md)
 - [Alphabetize Schema Columns To Keep Them Consistent](rails/alphabetize-schema-columns-to-keep-them-consistent.md)
 - [Alter The Rails Setup Script](rails/alter-the-rails-setup-script.md)
+- [Apply Basic HTML Formatting To Block Of Text](rails/apply-basic-html-formatting-to-block-of-text.md)
 - [Assert Two Arrays Have The Same Items With RSpec](rails/assert-two-arrays-have-the-same-items-with-rspec.md)
 - [Attach A File With Capybara](rails/attach-a-file-with-capybara.md)
 - [Attribute Getter without the Recursion](rails/attribute-getter-without-the-recursion.md)

devops/hatchbox-exports-env-vars-with-asdf.md

@@ -0,0 +1,44 @@
+# Hatchbox Exports Env Vars With asdf
+
+When you add env vars through the [Hatchbox](https://hatchbox.io/) UI, they get
+exported to the environment of the asdf-shimmed processes. This is handled by
+the [`asdf-vars` plugin](https://github.com/excid3/asdf-vars). That plugin
+looks for `.asdf-vars` in the current chain of directories.
+
+I can see there are many `.asdf-vars` files:
+
+```bash
+$ find . -name ".asdf-vars" -type f
+./.asdf-vars
+./my-app/.asdf-vars
+./my-app/releases/20250120195106/.asdf-vars
+./my-app/releases/20250121041054/.asdf-vars
+```
+
+And it is the one in my app's directory that contains the env vars that I set
+in the UI.
+
+```bash
+$ cat my-app/.asdf-vars
+BUNDLE_WITHOUT=development:test
+DATABASE_URL=postgresql://user_123:123456789012345@10.0.1.1/my_app_db
+PORT=9000
+RACK_ENV=production
+RAILS_ENV=production
+RAILS_LOG_TO_STDOUT=true
+RAILS_MASTER_KEY=abc123
+SECRET_KEY_BASE=abc123efg456
+```
+
+When I run a shimmed process like `ruby`, those env vars are loaded into the
+process's environment.
+
+```bash
+$ cd my-app/current
+$ which ruby
+/home/deploy/.asdf/shims/ruby
+$ ruby -e "puts ENV['DATABASE_URL']"
+postgresql://user_123:123456789012345@10.0.1.1/my_app_db
+```
+
+[source](https://www.visualmode.dev/hatchbox-manages-env-vars-with-asdf)

javascript/accessing-arguments-to-a-function.md

@@ -5,6 +5,8 @@ an array-like object with all of the arguments to the function. Even if not
 all of the arguments are referenced in the function signature, they can
 still be accessed via the `arguments` object.
 
+> For ES6+ compatibility, the `spread` operator used via [rest parameters](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters) is preferred over the `arugments` object when accessing an abritrary number of function arguments.
+
 ```javascript
 function argTest(one) {
   console.log(one);

rails/apply-basic-html-formatting-to-block-of-text.md

@@ -0,0 +1,40 @@
+# Apply Basic HTML Formatting To Block Of Text
+
+My Rails app has a form that allows a user to enter in free-form text. I enter
+in a couple paragraphs and save the record. It is rendered on a show page with
+a couple lines of ERB like so:
+
+```ruby
+<div class="max-w-3xl mx-auto">
+  <div class="space-y-4">
+    <div class="prose mt-8 text-gray-700">
+      <%= @record.notes %>
+    </div>
+  </div>
+</div>
+```
+
+When I view the erb-displayed version of that record's text, all those
+carefully spaced paragraphs are clumped together. That is because those newline
+(`\n` and `\n\n`) characters while understood to be whitespace do not have
+formatting implications in the browser like a combination of HTML tags and CSS
+do.
+
+I can apply some basic formatting with [the aptly named `simple_format` method
+available as an `ActionView`
+helper](https://api.rubyonrails.org/classes/ActionView/Helpers/TextHelper.html#method-i-simple_format).
+
+```ruby
+<div class="max-w-3xl mx-auto">
+  <div class="space-y-4">
+    <div class="prose mt-8 text-gray-700">
+      <%= simple_format(@record.notes) %>
+    </div>
+  </div>
+</div>
+```
+
+This turns single `\n` characters into a `<br />` tag and double `\n\n` cause
+the surrounding paragraphs to be wrapped in `<p>` tags. That simple formatting
+combined with my existing TailwindCSS styles makes the formatting of my text
+immediately look much better.