About Ruby instance methods

Write as a complement to vague knowledge about instance methods. If you have any mistakes, I would appreciate it if you could comment.

Instance method

-If a method is defined in the class definition expression, it becomes an instance method. (Corrected from syntax to definition formula) -Can be called for an instance of that class.

class Car
#Define an instance method (here name method)
  def name
    "yellow cab"
#name of the class.Create an instance with new and assign it to the variable taxi
taxi = Car.new
#Call an instance method
taxi.name #=> "yellow cab"


-Instance method is defined in the class. -Create an instance and then call the instance method. -The instance method can be called by "instance.method".

Referenced links and books

-Methods, classes, and instance methods were ambiguous https://qiita.com/right1121/items/c74d350bab32113d4f3d ・ [Ruby] I tried to learn about classes and instances again. https://qiita.com/ksk_diffeasy/items/734b4961e9e6c7480d33 ・ "Introduction to Ruby for those who aim to become professionals" Junichi Ito [Author] https://ruby-book.jnito.com/

Recommended Posts

About Ruby instance methods
About Ruby methods
About calling instance methods
[Ruby] About instance generation
[Ruby] methods, instance methods, etc ...
[Ruby] Class methods, instance methods, etc.
[Ruby] Handle instance variables with instance methods
About Ruby symbols
About ruby ​​form
About singular methods
About HttpServlet () methods
About Ruby arrays
About Ruby inheritance
About ruby block
About Ruby Hashes
Ruby Learning # 15 Methods
About Ruby Symbols
About Ruby variables
About Enclosing Instance 2
Find out about instance methods and self
About Ruby Kernel Module
About Ruby error messages
About Ruby regular expressions (metacharacters, captures, related methods)
About Ruby Hashes (continued)
About eval in Ruby
[ruby] About here documents
About Ruby if statement
Ruby Learning # 31 Object Methods
Ruby variables and methods
Ruby: Differences between class methods and instance methods, class variables and instance variables
About the [ruby] operator
Thinking about logic Ruby
[Ruby] Difference between methods with and without self in the class. About class methods and instance methods.
Find out about class methods
Basic methods of Ruby hashes
About an instance of java
Basic methods of Ruby arrays
About validation methods in JUnit
Explanation about Ruby Range object
[Self-use memo] (Ruby) class, class instance, instance
About naming Rails model methods
About regular expressions in Ruby
Three Bit Manipulation Methods (Ruby)
About Ruby hashes and symbols
Ruby About various iterative processes
[Ruby] What is an instance?
About pluck and ids methods
What are Ruby class methods?
About Java class variables class methods
About Ruby and object model
[Ruby] Singular methods and singular classes
About Ruby classes and instances
Ruby variables and functions (methods)
Ruby methods and classes (basic)
About instance variables and attr_ *
Explanation about Ruby String object
[Ruby] Singular methods and singular classes
About the behavior of ruby Hash # ==
About methods often used in devise
About Java static and non-static methods
About the equals () and hashcode () methods