Clean Ruby by Carleton DiLeo
Author:Carleton DiLeo
Language: eng
Format: epub
ISBN: 9781484255469
Publisher: Apress
Chaining method calls using this syntax is easier to follow since each call is on its on line.
Comments
Much thought goes into writing a line of code. In an ideal world, our code expresses these thoughts concisely. That isn’t always the case. Existing code and third-party libraries can introduce hacks and workarounds that are hard to communicate with code alone. After solving a difficult problem, we don’t want to lose the gained knowledge. This is where code comments are helpful. A comment provides more information and communicates assumptions for one or more lines of code. When another developer reads the comment, they won’t have to rediscover and solve the problems you encountered.
Comments sound great, so why not use them everywhere? While comments are helpful, it’s possible to overuse them: 1 def change_role(user_id, new_role)
2 # find a user by id
3 user = User.find(user_id)
4
5 # check that current role does not equal the new role
6 if user.role != new_role
7 # assign new role to the user
8 user.role = new_role
9 end
10 # end of method
11 end
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Coding Theory | Localization |
Logic | Object-Oriented Design |
Performance Optimization | Quality Control |
Reengineering | Robohelp |
Software Development | Software Reuse |
Structured Design | Testing |
Tools | UML |
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