Lessons
Ruby · Medium
Ruby · Medium. Ten lessons. Open-book quizzes. Lesson 1 free.
10 lessons · The Host · Lesson 1 free
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Lesson 1 · On the house
Enumerable deep
grep group_by.

Lesson 2
Keyword args
name:

Lesson 3
Struct and Data
Quick value objects.

Lesson 4
Comparable
<=> and mixins.

Lesson 5
Fibers sketch
Cooperative concurrency.

Lesson 6
Ractors caution
Experimental parallelism.

Lesson 7
Metaprogramming lite
define_method.

Lesson 8
Bundler & gems
Gemfile.lock.

Lesson 9
Encoding
UTF-8 hygiene.

Lesson 10
Medium capstone
Enumerable pipeline.
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