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Ruby

Information Technology > Programming languages

Description

Ruby is a high-level, interpreted programming language that emphasizes simplicity and productivity. It supports multiple programming paradigms, including procedural, object-oriented, and functional programming. Ruby skills range from understanding basic syntax and data types to more advanced concepts like metaprogramming and concurrency. As you progress, you'll learn about arrays, hashes, exception handling, modules, file I/O operations, and regular expressions. Advanced users can write complex code, optimize for performance, and even contribute to the Ruby language itself. Mastery of Ruby also involves understanding the Ruby interpreter, debugging techniques, and system design.

Stack

Ruby on Rails

Expected Behaviors

✎
LEVEL 1

Fundamental Awareness

At this level, individuals are expected to understand the basic syntax of Ruby and be familiar with its data types. They should be able to perform simple input/output operations and use basic control structures such as if, while, and for. Additionally, they should be capable of writing and calling simple functions.

🌱
LEVEL 2

Novice

Novices should have a good understanding of object-oriented programming in Ruby and be able to use arrays and hashes. They should know how to handle exceptions and use modules and mixins. They should also be familiar with file I/O operations and regular expressions.

🌍
LEVEL 3

Intermediate

Intermediate users should be able to use advanced features of arrays and hashes, understand metaprogramming, and use blocks, procs, and lambdas. They should have knowledge of multithreading and concurrency, understand garbage collection, and be able to use RubyGems and Bundler.

⭐
LEVEL 4

Advanced

Advanced users should be able to write and understand complex metaprogramming code, understand the Ruby Object Model, write and use DSLs, and have knowledge of advanced concurrency and parallelism techniques. They should understand the Ruby C API and be able to optimize Ruby code for performance.

🏆
LEVEL 5

Expert

Experts should have a deep understanding of the Ruby interpreter and its internals, and be able to contribute to the Ruby language itself. They should know advanced debugging and profiling techniques, understand how to design and implement complex systems using Ruby, and be able to mentor others and provide expert advice on Ruby development.

Micro Skills

✎
LEVEL 1

Fundamental Awareness

Knowledge of variable declaration and assignment
Understanding of arithmetic and logical operators
Ability to use comments
Understanding of method definition and invocation
Understanding of numbers, strings, and booleans
Knowledge of nil and its usage
Familiarity with symbols
Understanding of the difference between mutable and immutable data types
Ability to use puts and print for output
Understanding of gets for input
Ability to write if-else statements
Understanding of while and until loops
Knowledge of for loops and range objects
Familiarity with case statements
Knowledge of how to call a function
Understanding of function parameters and arguments
🌱
LEVEL 2

Novice

Understanding of class definition
Understanding of object creation
Understanding of instance variables
Knowledge of superclass and subclass
Understanding of method overriding
Understanding of public, private, and protected methods
Understanding of encapsulation principles
Knowledge of polymorphic methods
Understanding of duck typing
Understanding of class variables
🌍
LEVEL 3

Intermediate

Knowledge of common array methods
Knowledge of common hash methods
Knowledge of dynamic method creation
Understanding of introspection
Ability to use eval and its variants
Knowledge of hooks and callbacks
Understanding of block syntax and usage
Knowledge of proc objects
Understanding of lambda semantics
Ability to pass blocks, procs, and lambdas as arguments
Understanding of threads and their usage
Knowledge of thread safety and synchronization
Understanding of the Global Interpreter Lock (GIL)
Ability to use concurrent data structures
Knowledge of how Ruby's garbage collector works
Understanding of object life cycle
Ability to manage memory effectively
Knowledge of garbage collector tuning
Understanding of gem packaging system
Ability to create and publish a gem
Knowledge of Bundler and its usage
Understanding of managing dependencies with Bundler
⭐
LEVEL 4

Advanced

Understanding of the singleton class
Knowledge of method_missing and respond_to?
Ability to define methods dynamically
Understanding of instance_eval and class_eval
Knowledge of how objects, classes, and modules interact
Knowledge of object instance variables and class variables
Understanding of object id and object equality
Understanding of instance_eval for DSL creation
Knowledge of how to design a fluent interface
Ability to create a DSL with blocks
Understanding of how to use metaprogramming in DSLs
Understanding of threads and processes in Ruby
Knowledge of the Global Interpreter Lock (GIL)
Ability to use Thread and Process classes
Understanding of how to use Mutex and ConditionVariable
Knowledge of how to extend Ruby with C
Ability to write a Ruby extension in C
Understanding of the Ruby C API functions
Knowledge of how to handle memory management in C extensions
Understanding of Ruby's garbage collector
Knowledge of benchmarking and profiling tools
Ability to identify and optimize performance bottlenecks
Understanding of how to use caching for performance improvement
🏆
LEVEL 5

Expert

Understanding of the Ruby bytecode
Knowledge of the garbage collection process in Ruby
Familiarity with the Ruby interpreter's memory management
Understanding of the Ruby interpreter's thread scheduling
Understanding of the Ruby source code
Ability to write C extensions for Ruby
Knowledge of the Ruby community's contribution guidelines
Experience with testing and debugging changes to the Ruby language
Ability to use Ruby's built-in debugging tools
Understanding of how to profile Ruby code for performance
Knowledge of third-party debugging and profiling tools
Experience with debugging complex concurrency issues
Knowledge of software architecture principles
Experience with designing large-scale applications in Ruby
Understanding of how to structure Ruby code for maintainability and readability
Ability to make appropriate use of Ruby's metaprogramming features in large projects
Experience with teaching Ruby to others
Ability to explain complex Ruby concepts in simple terms
Understanding of best practices in Ruby development
Knowledge of the latest developments and trends in the Ruby community

Skill Overview

  • Expert3 years experience
  • Micro-skills91
  • Roles requiring skill1

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