Cannot use Classes on this ref ClassName (byRef) method Feature C# 7.2
i was testin the new and shiny C# 7.1/7.2/7.3 features and when i was trying out the this ref Class, it was not working, meanwhile this ref int worked, do you guys have any idea on how to make it work with classes?
Example of the code:
public static bool Works(this ref int i)
{
return i == 0;
}
public static bool DontWorks(this ref Test i)
{
return i.A == 0;
}
public class Test
{
public int A { get; set; }
}
I am sorry that the title was a little bit bad, but i didnt know on how to make it better, feel free to give me suggestions or edit if you like.
Thank you for your time, and have a nice day.
c# c#-7.2
asked Nov 23 '18 at 12:58
axd 221axd 221
82
|
show 5 more comments
i was testin the new and shiny C# 7.1/7.2/7.3 features and when i was trying out the this ref Class, it was not working, meanwhile this ref int worked, do you guys have any idea on how to make it work with classes?
Example of the code:
public static bool Works(this ref int i)
{
return i == 0;
}
public static bool DontWorks(this ref Test i)
{
return i.A == 0;
}
public class Test
{
public int A { get; set; }
}
I am sorry that the title was a little bit bad, but i didnt know on how to make it better, feel free to give me suggestions or edit if you like.
Thank you for your time, and have a nice day.
c# c#-7.2
asked Nov 23 '18 at 12:58
axd 221axd 221
82
1
Please paste the code into your question rather than using a screenshot. It helps people copy and paste your code to test it themselves.
– Gabriel Luci
Nov 23 '18 at 12:59
Extension functions don't needref
– Neil
Nov 23 '18 at 13:02
Why do you think you needrefhere? Your code will work fine without it.
– Patrick Hofman
Nov 23 '18 at 13:03
@GabrielLuci Edited the question thank you.
– axd 221
Nov 23 '18 at 13:04
1
this refis available only for Value types.
– SeM
Nov 23 '18 at 13:06
|
show 5 more comments
i was testin the new and shiny C# 7.1/7.2/7.3 features and when i was trying out the this ref Class, it was not working, meanwhile this ref int worked, do you guys have any idea on how to make it work with classes?
Example of the code:
public static bool Works(this ref int i)
{
return i == 0;
}
public static bool DontWorks(this ref Test i)
{
return i.A == 0;
}
public class Test
{
public int A { get; set; }
}
I am sorry that the title was a little bit bad, but i didnt know on how to make it better, feel free to give me suggestions or edit if you like.
Thank you for your time, and have a nice day.
c# c#-7.2
asked Nov 23 '18 at 12:58
axd 221axd 221
82
i was testin the new and shiny C# 7.1/7.2/7.3 features and when i was trying out the this ref Class, it was not working, meanwhile this ref int worked, do you guys have any idea on how to make it work with classes?
Example of the code:
public static bool Works(this ref int i)
{
return i == 0;
}
public static bool DontWorks(this ref Test i)
{
return i.A == 0;
}
public class Test
{
public int A { get; set; }
}
I am sorry that the title was a little bit bad, but i didnt know on how to make it better, feel free to give me suggestions or edit if you like.
Thank you for your time, and have a nice day.
c# c#-7.2
c# c#-7.2
asked Nov 23 '18 at 12:58
axd 221axd 221
82
asked Nov 23 '18 at 12:58
axd 221axd 221
82
edited Nov 23 '18 at 13:02
axd 221
asked Nov 23 '18 at 12:58
axd 221axd 221
82
asked Nov 23 '18 at 12:58
axd 221axd 221
82
asked Nov 23 '18 at 12:58
axd 221axd 221
82
82
1
Please paste the code into your question rather than using a screenshot. It helps people copy and paste your code to test it themselves.
– Gabriel Luci
Nov 23 '18 at 12:59
Extension functions don't needref
– Neil
Nov 23 '18 at 13:02
Why do you think you needrefhere? Your code will work fine without it.
– Patrick Hofman
Nov 23 '18 at 13:03
@GabrielLuci Edited the question thank you.
– axd 221
Nov 23 '18 at 13:04
1
this refis available only for Value types.
– SeM
Nov 23 '18 at 13:06
|
show 5 more comments
1
Please paste the code into your question rather than using a screenshot. It helps people copy and paste your code to test it themselves.
– Gabriel Luci
Nov 23 '18 at 12:59
Extension functions don't needref
– Neil
Nov 23 '18 at 13:02
Why do you think you needrefhere? Your code will work fine without it.
– Patrick Hofman
Nov 23 '18 at 13:03
@GabrielLuci Edited the question thank you.
– axd 221
Nov 23 '18 at 13:04
1
this refis available only for Value types.
– SeM
Nov 23 '18 at 13:06
1
1
Please paste the code into your question rather than using a screenshot. It helps people copy and paste your code to test it themselves.
– Gabriel Luci
Nov 23 '18 at 12:59
Please paste the code into your question rather than using a screenshot. It helps people copy and paste your code to test it themselves.
– Gabriel Luci
Nov 23 '18 at 12:59
Extension functions don't need
ref– Neil
Nov 23 '18 at 13:02
Extension functions don't need
ref– Neil
Nov 23 '18 at 13:02
Why do you think you need
ref here? Your code will work fine without it.– Patrick Hofman
Nov 23 '18 at 13:03
Why do you think you need
ref here? Your code will work fine without it.– Patrick Hofman
Nov 23 '18 at 13:03
@GabrielLuci Edited the question thank you.
– axd 221
Nov 23 '18 at 13:04
@GabrielLuci Edited the question thank you.
– axd 221
Nov 23 '18 at 13:04
1
1
this ref is available only for Value types.– SeM
Nov 23 '18 at 13:06
this ref is available only for Value types.– SeM
Nov 23 '18 at 13:06
|
show 5 more comments
1 Answer
1
active
oldest
votes
Ref extension methods are only allowed on types known to be structs. This is intentional. The reasons behind this can be found in the feature proposal document.
Besides, regular class types are reference types. Passing a reference type as a parameter does not copy the object, unlike with value type parameters.
answered Nov 23 '18 at 13:07
jan.hjan.h
511511
Thank you for explaining me and giving the material to read about, learned a lot reading the links you gave me.
– axd 221
Nov 23 '18 at 13:15
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Ref extension methods are only allowed on types known to be structs. This is intentional. The reasons behind this can be found in the feature proposal document.
Besides, regular class types are reference types. Passing a reference type as a parameter does not copy the object, unlike with value type parameters.
answered Nov 23 '18 at 13:07
jan.hjan.h
511511
Thank you for explaining me and giving the material to read about, learned a lot reading the links you gave me.
– axd 221
Nov 23 '18 at 13:15
add a comment |
Ref extension methods are only allowed on types known to be structs. This is intentional. The reasons behind this can be found in the feature proposal document.
Besides, regular class types are reference types. Passing a reference type as a parameter does not copy the object, unlike with value type parameters.
answered Nov 23 '18 at 13:07
jan.hjan.h
511511
Thank you for explaining me and giving the material to read about, learned a lot reading the links you gave me.
– axd 221
Nov 23 '18 at 13:15
add a comment |
Ref extension methods are only allowed on types known to be structs. This is intentional. The reasons behind this can be found in the feature proposal document.
Besides, regular class types are reference types. Passing a reference type as a parameter does not copy the object, unlike with value type parameters.
answered Nov 23 '18 at 13:07
jan.hjan.h
511511
Ref extension methods are only allowed on types known to be structs. This is intentional. The reasons behind this can be found in the feature proposal document.
Besides, regular class types are reference types. Passing a reference type as a parameter does not copy the object, unlike with value type parameters.
answered Nov 23 '18 at 13:07
jan.hjan.h
511511
answered Nov 23 '18 at 13:07
jan.hjan.h
511511
answered Nov 23 '18 at 13:07
jan.hjan.h
511511
answered Nov 23 '18 at 13:07
jan.hjan.h
511511
511511
Thank you for explaining me and giving the material to read about, learned a lot reading the links you gave me.
– axd 221
Nov 23 '18 at 13:15
add a comment |
Thank you for explaining me and giving the material to read about, learned a lot reading the links you gave me.
– axd 221
Nov 23 '18 at 13:15
Thank you for explaining me and giving the material to read about, learned a lot reading the links you gave me.
– axd 221
Nov 23 '18 at 13:15
Thank you for explaining me and giving the material to read about, learned a lot reading the links you gave me.
– axd 221
Nov 23 '18 at 13:15
add a comment |
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1
Please paste the code into your question rather than using a screenshot. It helps people copy and paste your code to test it themselves.
– Gabriel Luci
Nov 23 '18 at 12:59
Extension functions don't need
ref– Neil
Nov 23 '18 at 13:02
Why do you think you need
refhere? Your code will work fine without it.– Patrick Hofman
Nov 23 '18 at 13:03
@GabrielLuci Edited the question thank you.
– axd 221
Nov 23 '18 at 13:04
1
this refis available only for Value types.– SeM
Nov 23 '18 at 13:06