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C++ OOP

What is a constructor for? What are getters and setters for? I can set parameters for attributes without them

2nd May 2022, 10:15 PM
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ᙢᖇ.ᚪ ᚱ ع ℰ 爪 Ꭿ ກ - avatar
11 Answers
+ 3
Constructors give you an organized, standardized and slim way to initialize objects. Getters and setters protect attributes by only allowing controlled methods to check and change them. Sure anyone can do without them. Only with more work and less results.
2nd May 2022, 11:25 PM
Emerson Prado
Emerson Prado - avatar
+ 2
the constructor is a method that is called when you create an object of the class setters are methods that take the value you are trying to set to a variable in the object, like so: class x: def setUwu(self, value): self.uwu = value and getters are the same but for getting the value those kind of methods are used usually in old languages and have kind of a security porpoise hope it helps
3rd May 2022, 12:05 AM
6hpxq9
6hpxq9 - avatar
+ 1
Constructor is a method which is used to create objects. Getters and setters are also methods . Getters are used to get an object's attributes and setters to edit object's attributes. Yes, you can set parameters without using them, its possible but not recommended.
2nd May 2022, 11:24 PM
Black Winter
+ 1
By using a constructor you can initialize object's attributes in the creation time by passing parameters values through the constructor as constructor's arguments.
2nd May 2022, 11:32 PM
Black Winter
+ 1
u can also, as Emerson Prado said instantiate some variables in the constructor in languages where you can't write variables out of the methods
3rd May 2022, 12:07 AM
6hpxq9
6hpxq9 - avatar
0
Emerson Prado Why with more work? And why it is recommended to create a constructor at the beginning of the class, even if empty?
2nd May 2022, 11:29 PM
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ᙢᖇ.ᚪ ᚱ ع ℰ 爪 Ꭿ ກ - avatar
0
Sry, i'm use translate, because have only study English skills
2nd May 2022, 11:29 PM
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Emerson Prado OK, thanks for answer. May I contact you next time?
2nd May 2022, 11:40 PM
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0
_ᙢǾሊỢȡΘŬ_ Always prefer using the forum. This way, the answers stay available to everyone.
3rd May 2022, 10:56 AM
Emerson Prado
Emerson Prado - avatar
0
Ренат Гилязов No. Constructors are not needed to display anything, nor test a condition. They are intended to set initial state of objects. With or without outputs and decisions.
5th May 2022, 12:43 AM
Emerson Prado
Emerson Prado - avatar
- 2
_ᙢǾሊỢȡΘŬ_ Without a constructor, you have to populate attributes manually. Without getters and setters, you have to expose the attributes, then implement whatever validation and processing at each attribution. Just think of the additional work and risk. And the messy maintenance. We better have the constructor at the top just so it's easy to find.
2nd May 2022, 11:37 PM
Emerson Prado
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