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Ruby Objects and Expressions
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Programming languages · 30 lessons · up to 10 minutes each
Ruby
A progressive Ruby sequence through expressive syntax, reusable behavior, gems, and tests. Ten lessons are published; twenty remain Coming Soon.
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Ruby
Permanent access to the lessons published in this track when you buy. Future lessons are not included. 10 of 30 lessons are published; 0 are in owner review and 20 are Coming Soon.
See the 10 published lessons
- Ruby Objects and Expressions
- Ruby Strings and Symbols
- Ruby Arrays and Hashes
- Ruby Conditions and Iteration
- Ruby Methods and Blocks
- Ruby Modules and Mixins
- Ruby Classes and Inheritance
- Ruby Exceptions and Resource Cleanup
- Ruby Enumerables and Lazy Iteration
- Ruby Gems and Tests
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Beginner
Lessons 1–10
01 Ruby Objects and Expressions
Topic: objects and expressions
Use Ruby objects and expressions to calculate a small result.
02 03 04 Ruby Conditions and Iteration
Topic: conditions and iteration
Choose a branch and iterate over records safely.
05 Ruby Methods and Blocks
Topic: methods and blocks
Pass a block to a method that transforms a small collection.
06 Ruby Modules and Mixins
Topic: modules and mixins
Share behavior with a Ruby module and include it in a class.
07 Ruby Classes and Inheritance
Topic: classes and inheritance
Model a class hierarchy while keeping the public contract small.
08 Ruby Exceptions and Resource Cleanup
Topic: exceptions and resource cleanup
Handle an expected exception and guarantee cleanup behavior.
09 Ruby Enumerables and Lazy Iteration
Topic: enumerables and lazy iteration
Compose Enumerable methods and defer work with lazy iteration.
10 Ruby Gems and Tests
Topic: gems and tests
Describe a gem dependency and assert a deterministic Ruby result.
Intermediate
Lessons 11–20
11 Ruby: Build an example with objects and expressions
Topic: objects and expressions
Create a small working example that uses objects and expressions in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate4 minComing Soon12 Ruby: Compose strings and symbols with another component
Topic: strings and symbols
Combine strings and symbols in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate5 minComing Soon13 Ruby: Configure arrays and hashes for a small case
Topic: arrays and hashes
Set up arrays and hashes in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate6 minComing Soon14 Ruby: Validate inputs around conditions and iteration
Topic: conditions and iteration
Add a check around conditions and iteration in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate7 minComing Soon15 Ruby: Use methods and blocks in a short workflow
Topic: methods and blocks
Add methods and blocks in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate8 minComing Soon16 Ruby: Refactor modules and mixins into a reusable unit
Topic: modules and mixins
Extract modules and mixins in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate9 minComing Soon17 Ruby: Exercise classes and inheritance with sample data
Topic: classes and inheritance
Run sample data through classes and inheritance in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate10 minComing Soon18 Ruby: Observe exceptions and resource cleanup outputs
Topic: exceptions and resource cleanup
Capture the result of exceptions and resource cleanup in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate3 minComing Soon19 Ruby: Recover from a enumerables and lazy iteration failure
Topic: enumerables and lazy iteration
Handle one expected failure from enumerables and lazy iteration in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate5 minComing Soon20 Ruby: Document gems and tests behavior
Topic: gems and tests
Write a short usage note for gems and tests in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Intermediate6 minComing Soon
Advanced
Lessons 21–30
21 Ruby: Test a boundary around objects and expressions
Topic: objects and expressions
Add an edge-case test for objects and expressions in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced4 minComing Soon22 Ruby: Harden strings and symbols
Topic: strings and symbols
Add the relevant access, safety, or validation control to strings and symbols in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced5 minComing Soon23 Ruby: Measure arrays and hashes
Topic: arrays and hashes
Record a small baseline for arrays and hashes in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced6 minComing Soon24 Ruby: Reduce cost in conditions and iteration
Topic: conditions and iteration
Change one measurable cost in conditions and iteration in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced7 minComing Soon25 Ruby: Diagnose a methods and blocks failure
Topic: methods and blocks
Use an observable signal to explain a failure in methods and blocks in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced8 minComing Soon26 Ruby: Make modules and mixins repeatable
Topic: modules and mixins
Show that rerunning modules and mixins in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced9 minComing Soon27 Ruby: Review trade-offs in classes and inheritance
Topic: classes and inheritance
Compare two documented approaches to classes and inheritance in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced10 minComing Soon28 Ruby: Improve exceptions and resource cleanup maintainability
Topic: exceptions and resource cleanup
Refine exceptions and resource cleanup in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced3 minComing Soon29 Ruby: Verify enumerables and lazy iteration end to end
Topic: enumerables and lazy iteration
Check that a complete small flow using enumerables and lazy iteration in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced5 minComing Soon30 Ruby: Audit gems and tests against its source docs
Topic: gems and tests
Check the implementation of gems and tests in the context of Ruby objects, blocks, modules, and enumerable workflows; save a short example or check that demonstrates the result.
Advanced6 minComing Soon
Reference documentation
References support the selected track topics while its lesson content is built and reviewed progressively.
Ten Ruby lessons are published and independently purchasable. The other 20 listings are planned and unavailable.