Where are ref types that are members of value types stored?

[Sathyaish]

Structs are value types, strings are ref types. If you have something
like this:

struct foo
{

System.String str;
}

foo TheDayToday;

then, where's

TheDayToday.str

going to be stored?

(a) The string is going to be stored on the stack;
(b) The struct is going to be stored on the stack with a 32-bit
System.IntPtr/System.UInt32 also copied on the stack holding the
address/reference to the actual string allocated on the heap.

[Mad Murdoch]

Can I take 50/50 ? :)

b.


"Sathyaish" <Sa*******@Yaho o.com> wrote in message
news:11******** *************@g 44g2000cwa.goog legroups.com...

Structs are value types, strings are ref types. If you have something
like this:

struct foo
{

System.String str;
}

foo TheDayToday;

then, where's

TheDayToday.str

going to be stored?

(a) The string is going to be stored on the stack;
(b) The struct is going to be stored on the stack with a 32-bit
System.IntPtr/System.UInt32 also copied on the stack holding the
address/reference to the actual string allocated on the heap.

[Jay B. Harlow [MVP - Outlook]]

Sathyaish,
This appears to be a C# question, being asked in a VB.NET newsgroup, sample
auto-translated into VB.NET.

Public Structure foo
Public str As String
End Structure

Public Sub Main()
Dim TheDayToday As foo
End Sub

The TheDayToday variable is on the stack, "foo" being a value type its
content is also on the stack. Which means the str variable, the variable
itself, is on the stack. However String being a reference type means the
actual value of the string is on the heap. In other words str on the stack
holds a reference to a String Object on the Heap.

Hope this helps
Jay

"Sathyaish" <Sa*******@Yaho o.com> wrote in message
news:11******** *************@g 44g2000cwa.goog legroups.com...
| Structs are value types, strings are ref types. If you have something
| like this:
|
| struct foo
| {
|
| System.String str;
| }
|
| foo TheDayToday;
|
| then, where's
|
| TheDayToday.str
|
| going to be stored?
|
| (a) The string is going to be stored on the stack;
| (b) The struct is going to be stored on the stack with a 32-bit
| System.IntPtr/System.UInt32 also copied on the stack holding the
| address/reference to the actual string allocated on the heap.
|

[Cor Ligthert]

Sathyaish,

I saw a same question answered in this newsgroup

http://groups-beta.google.com/group/...98912b823353dd

I hope this helps,

Cor

[Sathyaish]

Thanks, Jay and Cor.