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Add note on method naming conventions

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Ryan Plant
2016-01-26 11:58:46 +11:00
parent 0f5c74a79f
commit b9c1502cab
1 changed files with 13 additions and 0 deletions
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@@ -419,6 +419,19 @@ breakfast, lunch, dinner = foods
breakfast # 'pancake'
dinner # 'quesadilla'
# By convention, all methods that return booleans end with a question mark
5.even? # false
5.odd? # true
# And if a method ends with an exclamation mark, it does something destructive
# like mutate the receiver. Many methods have a ! version to make a change, and
# a non-! version to just return a new changed version
company_name = "Dunder Mifflin"
company_name.upcase #=> "DUNDER MIFFLIN"
company_name #=> "Dunder Mifflin"
company_name.upcase! # we're mutating company_name this time!
company_name #=> "DUNDER MIFFLIN"
# Define a class with the class keyword
class Human