Public mutator methods in object-oriented programming, responsible for changing and returning the value of private class members, thus keeping with the principle of encapsulation.
Questions tagged [getter-setter]
2157 questions
796
votes
13 answers
Using @property versus getters and setters
What advantages does the @property notation hold over the classic getter+setter? In which specific cases/situations should a programmer choose to use one over the other?
With properties:
class MyClass(object):
@property
def my_attr(self):
…
Zaur Nasibov
- 22,280
- 12
- 56
- 83
655
votes
9 answers
What's the pythonic way to use getters and setters?
I'm doing it like:
def set_property(property,value):
def get_property(property):
or
object.property = value
value = object.property
What's the pythonic way to use getters and setters?
Jorge Guberte
- 10,464
- 8
- 37
- 56
221
votes
11 answers
Property getters and setters
With this simple class I am getting the compiler warning
Attempting to modify/access x within its own setter/getter
and when I use it like this:
var p: point = Point()
p.x = 12
I get an EXC_BAD_ACCESS. How can I do this without explicit backing…
Atomix
- 13,427
- 9
- 38
- 46
192
votes
8 answers
Instance member cannot be used on type
I have the following class:
class ReportView: NSView {
var categoriesPerPage = [[Int]]()
var numPages: Int = { return categoriesPerPage.count }
}
Compilation fails with the message:
Instance member 'categoriesPerPage' cannot be used on…
Aderstedt
- 6,301
- 5
- 28
- 44
174
votes
5 answers
Is it possible to implement dynamic getters/setters in JavaScript?
I am aware of how to create getters and setters for properties whose names one already knows, by doing something like this:
// A trivial example:
function MyObject(val){
this.count = 0;
this.value = val;
}
MyObject.prototype = {
get…
daiscog
- 11,441
- 6
- 50
- 62
168
votes
2 answers
How do you implement a private setter when using an interface?
I've created an interface with some properties.
If the interface didn't exist all properties of the class object would be set to
{ get; private set; }
However, this isn't allowed when using an interface,so can this be achieved and if so how?
dotnetnoob
- 10,783
- 20
- 57
- 103
160
votes
16 answers
Why is it impossible to override a getter-only property and add a setter?
Why is the following C# code not allowed:
public abstract class BaseClass
{
public abstract int Bar { get;}
}
public class ConcreteClass : BaseClass
{
public override int Bar
{
get { return 0; }
set {}
}
}
CS0546…
ripper234
- 222,824
- 274
- 634
- 905
142
votes
9 answers
c#: getter/setter
I saw something like the following somewhere, and was wondering what it meant. I know they are getters and setters, but want to know why the string Type is defined like this. Thanks for helping me.
public string Type { get; set; }
Maya
- 7,053
- 11
- 42
- 53
137
votes
8 answers
Getters and Setters in Kotlin
In Java, for example, I can write getters on my own (generated by IDE) or use Annotations like @Getter in lombok - which was pretty simple.
Kotlin however has getters and setters by default.
But I can't understand how to use them.
I want to make it,…
nutella_eater
- 3,393
- 3
- 27
- 46
132
votes
10 answers
Is it possible to read the value of a annotation in java?
this is my code:
@Column(columnName="firstname")
private String firstName;
@Column(columnName="lastname")
private String lastName;
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
…
BeeS
- 1,329
- 2
- 9
- 3
114
votes
7 answers
How can I overwrite a getter method in an ActiveRecord model?
I'm trying to overwrite a getter method for an ActiveRecord model. I have an attribute called name in the model Category, and I'd like to be able to do something like this:
def name
name_trans || name
end
If name_trans attribute is not nil, then…
oyvindhauge
- 3,496
- 2
- 29
- 45
106
votes
12 answers
Getters, setters, and properties best practices. Java vs. C#
I'm taking a C# class right now and I'm trying to find out the best way of doing things. I come from a Java background and so I'm only familiar with Java best-practices; I'm a C# novice!
In Java if I have a private property, I do this;
private…
Vivin Paliath
- 94,126
- 40
- 223
- 295
104
votes
3 answers
Private setter typescript?
Is there a way to have a private setter for a property in TypeScript?
class Test
{
private _prop: string;
public get prop() : string
{
return this._prop;
}
private set prop(val: string)
{
//can put…
sheamus
- 3,001
- 4
- 31
- 54
89
votes
4 answers
Why I can't use let in protocol in Swift?
I have a doubt about protocols in Swift about the use of var and the keywords { get set }.
From Apple documentation:
If a protocol requires a property to be gettable and settable, that
property requirement cannot be fulfilled by a constant stored…
Massimo Polimeni
- 4,826
- 4
- 27
- 54
88
votes
11 answers
Is it good practice to make getters and setters inline?
public:
inline int GetValue() const {
return m_nValue;
}
inline void SetValue(int nNewValue) {
this -> m_nValue = nNewValue;
}
On Learn C++, they said it would run faster. So, I thought it would be great to…
Martijn Courteaux
- 67,591
- 47
- 198
- 287