> For the complete documentation index, see [llms.txt](https://ploegert.gitbook.io/til/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ploegert.gitbook.io/til/programmy/ruby.md). # ruby - [A Basic Case Statement](https://ploegert.gitbook.io/til/programmy/ruby/a-basic-case-statement.md) - [A Shorthand For Rerunning Failed Tests With RSpec](https://ploegert.gitbook.io/til/programmy/ruby/a-shorthand-for-rerunning-failed-tests-with-rspec.md) - [Add Comments To Regex With Free-Spacing](https://ploegert.gitbook.io/til/programmy/ruby/add-comments-to-regex-with-free-spacing.md) - [Add Linux As A Bundler Platform](https://ploegert.gitbook.io/til/programmy/ruby/add-linux-as-a-bundler-platform.md) - [Are They All True?](https://ploegert.gitbook.io/til/programmy/ruby/are-they-all-true.md) - [Assert About An Object's Attributes With RSpec](https://ploegert.gitbook.io/til/programmy/ruby/assert-about-an-objects-attributes-with-rspec.md) - [Assoc For Hashes](https://ploegert.gitbook.io/til/programmy/ruby/assoc-for-hashes.md) - [Block Comments](https://ploegert.gitbook.io/til/programmy/ruby/block-comments.md) - [Build HTTP And HTTPS URLs](https://ploegert.gitbook.io/til/programmy/ruby/build-http-and-https-urls.md) - [Chaining Multiple RSpec Change Matchers](https://ploegert.gitbook.io/til/programmy/ruby/chaining-multiple-rspec-change-matchers.md) - [Check Return Status Of Running A Shell Command](https://ploegert.gitbook.io/til/programmy/ruby/check-return-status-of-running-a-shell-command.md) - [Click On Text With Capybara](https://ploegert.gitbook.io/til/programmy/ruby/click-on-text-with-capybara.md) - [Colorful Output With MiniTest](https://ploegert.gitbook.io/til/programmy/ruby/colorful-output-with-minitest.md) - [Comparing Class Hierarchy Relationships](https://ploegert.gitbook.io/til/programmy/ruby/comparing-class-hierarchy-relationships.md) - [Comparing Arrays In RSpec](https://ploegert.gitbook.io/til/programmy/ruby/comparing-arrays-in-rspec.md) - [Construct A Constant From A String](https://ploegert.gitbook.io/til/programmy/ruby/construct-a-constant-from-a-string.md) - [Create an Array of Stringed Numbers](https://ploegert.gitbook.io/til/programmy/ruby/create-an-array-of-stringed-numbers.md) - [Create a CSV::Table Object](https://ploegert.gitbook.io/til/programmy/ruby/create-a-csv-table-object.md) - [Create A Hash From An Array Of Arrays](https://ploegert.gitbook.io/til/programmy/ruby/create-a-hash-from-an-array-of-arrays.md) - [Create Listing Of All Middleman Pages](https://ploegert.gitbook.io/til/programmy/ruby/create-listing-of-all-middleman-pages.md) - [Create Named Structs With Struct.new](https://ploegert.gitbook.io/til/programmy/ruby/create-named-structs-with-struct-new.md) - [Create Thumbnail Image For A PDF](https://ploegert.gitbook.io/til/programmy/ruby/create-thumbnail-image-for-a-pdf.md) - [Defaulting To Frozen String Literals](https://ploegert.gitbook.io/til/programmy/ruby/defaulting-to-frozen-string-literals.md) - [Define A Custom RSpec Matcher](https://ploegert.gitbook.io/til/programmy/ruby/define-a-custom-rspec-matcher.md) - [Define A Method On A Struct](https://ploegert.gitbook.io/til/programmy/ruby/define-a-method-on-a-struct.md) - [Destructure The First Item From An Array](https://ploegert.gitbook.io/til/programmy/ruby/destructure-the-first-item-from-an-array.md) - [Destructuring Arrays In Blocks](https://ploegert.gitbook.io/til/programmy/ruby/destructuring-arrays-in-blocks.md) - [Disassemble Some Codes](https://ploegert.gitbook.io/til/programmy/ruby/disassemble-some-codes.md) - [Double Splat To Merge Hashes](https://ploegert.gitbook.io/til/programmy/ruby/double-splat-to-merge-hashes.md) - [Edit Previous Parts Of The Pry Buffer History](https://ploegert.gitbook.io/til/programmy/ruby/edit-previous-parts-of-the-pry-buffer-history.md) - [Editing Code In Pry](https://ploegert.gitbook.io/til/programmy/ruby/editing-code-in-pry.md) - [Encode A String As URL-Safe Base64](https://ploegert.gitbook.io/til/programmy/ruby/encode-a-string-as-url-safe-base64.md) - [Enumerate A Pairing Of Every Two Sequential Items](https://ploegert.gitbook.io/til/programmy/ruby/enumerate-a-pairing-of-every-two-sequential-items.md) - [Evaluating One-Off Commands](https://ploegert.gitbook.io/til/programmy/ruby/evaluating-one-off-commands.md) - [Exclude Values From An Array](https://ploegert.gitbook.io/til/programmy/ruby/exclude-values-from-an-array.md) - [Expect A Method To Be Called And Actually Call It](https://ploegert.gitbook.io/til/programmy/ruby/expect-a-method-to-be-called-and-actually-call-it.md) - [FactoryGirl Sequences](https://ploegert.gitbook.io/til/programmy/ruby/factory-girl-sequences.md) - [Fail](https://ploegert.gitbook.io/til/programmy/ruby/fail.md) - [Find The Min And Max With A Single Call](https://ploegert.gitbook.io/til/programmy/ruby/find-the-min-and-max-with-a-single-call.md) - [Finding The Source of Ruby Methods](https://ploegert.gitbook.io/til/programmy/ruby/finding-the-source-of-ruby-methods.md) - [Generate A Signed JWT Token](https://ploegert.gitbook.io/til/programmy/ruby/generate-a-signed-jwt-token.md) - [Generate Ruby Version And Gemset Files With RVM](https://ploegert.gitbook.io/til/programmy/ruby/generate-ruby-version-and-gemset-files-with-rvm.md) - [Get Info About Your RubyGems Environment](https://ploegert.gitbook.io/til/programmy/ruby/get-info-about-your-ruby-gems-environment.md) - [Identify Outdated Gems](https://ploegert.gitbook.io/til/programmy/ruby/identify-outdated-gems.md) - [If You Detect None](https://ploegert.gitbook.io/til/programmy/ruby/if-you-detect-none.md) - [Iterate With An Offset Index](https://ploegert.gitbook.io/til/programmy/ruby/iterate-with-an-offset-index.md) - [Include Extra Context In A Honeybadger Notify](https://ploegert.gitbook.io/til/programmy/ruby/include-extra-context-in-a-honeybadger-notify.md) - [Ins And Outs Of Pry](https://ploegert.gitbook.io/til/programmy/ruby/ins-and-outs-of-pry.md) - [Invoking Rake Tasks Multiple Times](https://ploegert.gitbook.io/til/programmy/ruby/invoking-rake-tasks-multiple-times.md) - [IRB Has Built-In Benchmarking With Ruby 3](https://ploegert.gitbook.io/til/programmy/ruby/irb-has-built-in-benchmarking-with-ruby-3.md) - [Jump Out Of A Nested Context With Throw/Catch](https://ploegert.gitbook.io/til/programmy/ruby/jump-out-of-a-nested-context-with-throw-catch.md) - [Last Raised Exception In The Call Stack](https://ploegert.gitbook.io/til/programmy/ruby/last-raised-exception-in-the-call-stack.md) - [Limit Split](https://ploegert.gitbook.io/til/programmy/ruby/limit-split.md) - [List The Running Ruby Version](https://ploegert.gitbook.io/til/programmy/ruby/list-the-running-ruby-version.md) - [Listing Local Variables](https://ploegert.gitbook.io/til/programmy/ruby/listing-local-variables.md) - [Map With Index Over An Array](https://ploegert.gitbook.io/til/programmy/ruby/map-with-index-over-an-array.md) - [Mock Method Chain Calls With RSpec](https://ploegert.gitbook.io/til/programmy/ruby/mock-method-chain-calls-with-rspec.md) - [Mocking Requests With Partial URIs Using Regex](https://ploegert.gitbook.io/til/programmy/ruby/mocking-requests-with-partial-uris-using-regex.md) - [Named Regex Captures Are Assigned To Variables](https://ploegert.gitbook.io/til/programmy/ruby/named-regex-captures-are-assigned-to-variables.md) - [Navigate Back In The Browser With Capybara](https://ploegert.gitbook.io/til/programmy/ruby/navigate-back-in-the-browser-with-capybara.md) - [Next And Previous Floats](https://ploegert.gitbook.io/til/programmy/ruby/next-and-previous-floats.md) - [Or Operator Precedence](https://ploegert.gitbook.io/til/programmy/ruby/or-operator-precedence.md) - [Override The Initial Sequence Value](https://ploegert.gitbook.io/til/programmy/ruby/override-the-initial-sequence-value.md) - [Parallel Bundle Install](https://ploegert.gitbook.io/til/programmy/ruby/parallel-bundle-install.md) - [Parse JSON Into An OpenStruct](https://ploegert.gitbook.io/til/programmy/ruby/parse-json-into-an-open-struct.md) - [Parsing A CSV With Quotes In The Data](https://ploegert.gitbook.io/til/programmy/ruby/parsing-a-csv-with-quotes-in-the-data.md) - [Pass A Block To Count](https://ploegert.gitbook.io/til/programmy/ruby/pass-a-block-to-count.md) - [Passing Arbitrary Methods As Blocks](https://ploegert.gitbook.io/til/programmy/ruby/passing-arbitrary-methods-as-blocks.md) - [Passing Arguments To A Rake Task](https://ploegert.gitbook.io/til/programmy/ruby/passing-arguments-to-a-rake-task.md) - [Pattern Match Values From A Hash](https://ploegert.gitbook.io/til/programmy/ruby/pattern-match-values-from-a-hash.md) - [Percent Notation](https://ploegert.gitbook.io/til/programmy/ruby/percent-notation.md) - [Question Mark Operator](https://ploegert.gitbook.io/til/programmy/ruby/question-mark-operator.md) - [Rake Only Lists Tasks With Descriptions](https://ploegert.gitbook.io/til/programmy/ruby/rake-only-lists-tasks-with-descriptions.md) - [Read The First Line From A File](https://ploegert.gitbook.io/til/programmy/ruby/read-the-first-line-from-a-file.md) - [Rendering ERB](https://ploegert.gitbook.io/til/programmy/ruby/rendering-erb.md) - [Replace The Current Process With An External Command](https://ploegert.gitbook.io/til/programmy/ruby/replace-the-current-process-with-an-external-command.md) - [Require Entire Gemfile In Pry Session](https://ploegert.gitbook.io/til/programmy/ruby/require-entire-gemfile-in-pry-session.md) - [Rerun Only Failures With RSpec](https://ploegert.gitbook.io/til/programmy/ruby/rerun-only-failures-with-rspec.md) - [Retry A Block After An Exception](https://ploegert.gitbook.io/til/programmy/ruby/retry-a-block-after-an-exception.md) - [Returning With Sequel](https://ploegert.gitbook.io/til/programmy/ruby/returning-with-sequel.md) - [rexml Is A Bundled Gem As Of Ruby 3.0.0](https://ploegert.gitbook.io/til/programmy/ruby/rexml-is-a-bundled-gem-as-of-ruby-3-0-0.md) - [Run An Older Version Of Bundler](https://ploegert.gitbook.io/til/programmy/ruby/run-an-older-version-of-bundler.md) - [Running A Single MiniTest Example](https://ploegert.gitbook.io/til/programmy/ruby/running-a-single-minitest-example.md) - [Safe Navigation Operator](https://ploegert.gitbook.io/til/programmy/ruby/safe-navigation-operator.md) - [Scripting With RVM](https://ploegert.gitbook.io/til/programmy/ruby/scripting-with-rvm.md) - [Scroll To Top Of Page With Capybara](https://ploegert.gitbook.io/til/programmy/ruby/scroll-to-top-of-page-with-capybara.md) - [Set RVM Default Ruby](https://ploegert.gitbook.io/til/programmy/ruby/set-rvm-default-ruby.md) - [Show Public Methods With Pry](https://ploegert.gitbook.io/til/programmy/ruby/show-public-methods-with-pry.md) - [Silence The Output Of A Ruby Statement In Pry](https://ploegert.gitbook.io/til/programmy/ruby/silence-the-output-of-a-ruby-statement-in-pry.md) - [Single And Double Quoted String Notation](https://ploegert.gitbook.io/til/programmy/ruby/single-and-double-quoted-string-notation.md) - [Squeeze Out The Extra Space](https://ploegert.gitbook.io/til/programmy/ruby/squeeze-out-the-extra-space.md) - [String Interpolation With Instance Variables](https://ploegert.gitbook.io/til/programmy/ruby/string-interpolation-with-instance-variables.md) - [Summing Collections](https://ploegert.gitbook.io/til/programmy/ruby/summing-collections.md) - [Turn Key And Value Arrays Into A Hash](https://ploegert.gitbook.io/til/programmy/ruby/turn-key-and-values-arrays-into-a-hash.md) - [Turning Any Class Into An Enumerator](https://ploegert.gitbook.io/til/programmy/ruby/turning-any-class-into-an-enumerator.md) - [Turning Things Into Hashes](https://ploegert.gitbook.io/til/programmy/ruby/turning-things-into-hashes.md) - [Uncaught Exceptions In Pry](https://ploegert.gitbook.io/til/programmy/ruby/uncaught-exceptions-in-pry.md) - [undef\_method And The Inheritance Hierarchy](https://ploegert.gitbook.io/til/programmy/ruby/undef-method-and-the-inheritance-hierarchy.md) - [Uninstall Specific Version Of A Ruby Gem](https://ploegert.gitbook.io/til/programmy/ruby/uninstall-specific-version-of-a-ruby-gem.md) - [Unpacking Strings Into Binary](https://ploegert.gitbook.io/til/programmy/ruby/unpacking-strings-into-binary.md) - [Up And Down With Integers](https://ploegert.gitbook.io/til/programmy/ruby/up-and-down-with-integers.md) - [Update The Gemfile Bundled With Version](https://ploegert.gitbook.io/til/programmy/ruby/update-the-gemfile-bundled-with-version.md) - [Use A Case Statement As A Cond Statement](https://ploegert.gitbook.io/til/programmy/ruby/use-a-case-statement-as-a-cond-statement.md) - [Use dotenv In A Non-Rails Project](https://ploegert.gitbook.io/til/programmy/ruby/use-dotenv-in-a-non-rails-project.md) - [Use Tap For Better Test Data Setup](https://ploegert.gitbook.io/til/programmy/ruby/use-tap-for-better-test-data-setup.md) - [Using BCrypt To Create And Check Hashed Passwords](https://ploegert.gitbook.io/til/programmy/ruby/using-bcrypt-to-create-and-check-hashed-passwords.md) - [What To Do When You Don't Rescue](https://ploegert.gitbook.io/til/programmy/ruby/what-to-do-when-you-dont-rescue.md) - [Who Are My Ancestors?](https://ploegert.gitbook.io/til/programmy/ruby/who-are-my-ancestors.md) - [Wrap Things In An Array, Even Hashes](https://ploegert.gitbook.io/til/programmy/ruby/wrap-things-in-an-array-even-hashes.md) - [Zero Padding](https://ploegert.gitbook.io/til/programmy/ruby/zero-padding.md) --- # Agent Instructions This documentation is published with GitBook. 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