sizeof(bool) quick question

[Brian Keating]

Hi there,

i want to know size of managed bool (know it is 1byte according to language
spec)
but how do i do it in code?

Marshal.Sizeof... isn't an option cause it returns 4 bytes, i.e. unmanaged
Boolean

what is correct syntax?

Thanks in advance

Brian

[Dennis Myrén]

You can use sizeof(bool) but then you need to compile with the /unsafe
switch
and also place that unsafe code in an unsafe code block.

unsafe
{
Console.WriteLine(sizeof(bool));
}

PS
Specifying to compile with the unsafe switch can also be done from the
VS.NET IDE
under Project->[ProjectName] Properties...->Configuration Properties->Build

--
Regards,
Dennis JD Myrén
Oslo Kodebureau
"Brian Keating" <Br**********@discussions.microsoft.com> wrote in message
news:49**********************************@microsof t.com...

Hi there,

i want to know size of managed bool (know it is 1byte according to
language
spec)
but how do i do it in code?

Marshal.Sizeof... isn't an option cause it returns 4 bytes, i.e. unmanaged
Boolean

what is correct syntax?

Thanks in advance

Brian

[Tom Porterfield]

Brian Keating wrote:

Hi there,

i want to know size of managed bool (know it is 1byte according to
language spec)
but how do i do it in code?

Marshal.Sizeof... isn't an option cause it returns 4 bytes, i.e. unmanaged
Boolean

what is correct syntax?

You can use sizeof in C# but you have to specify the code as unsafe. Ex:

unsafe static int GetSize()
{
return sizeof(bool);
}

You will see that returns 1.
--
Tom Porterfield

[Brian Keating]

Thanks for your reply.
"Dennis Myrén" wrote:

You can use sizeof(bool) but then you need to compile with the /unsafe
switch
and also place that unsafe code in an unsafe code block.

unsafe
{
Console.WriteLine(sizeof(bool));
}

PS
Specifying to compile with the unsafe switch can also be done from the
VS.NET IDE
under Project->[ProjectName] Properties...->Configuration Properties->Build

--
Regards,
Dennis JD Myrén
Oslo Kodebureau
"Brian Keating" <Br**********@discussions.microsoft.com> wrote in message
news:49**********************************@microsof t.com...

Hi there,

i want to know size of managed bool (know it is 1byte according to
language
spec)
but how do i do it in code?

Marshal.Sizeof... isn't an option cause it returns 4 bytes, i.e. unmanaged
Boolean

what is correct syntax?

Thanks in advance

Brian

[Brian Keating]

Thanks for your reply

"Tom Porterfield" wrote:

Brian Keating wrote:

Hi there,

i want to know size of managed bool (know it is 1byte according to
language spec)
but how do i do it in code?

Marshal.Sizeof... isn't an option cause it returns 4 bytes, i.e. unmanaged
Boolean

what is correct syntax?

You can use sizeof in C# but you have to specify the code as unsafe. Ex:

unsafe static int GetSize()
{
return sizeof(bool);
}

You will see that returns 1.
--
Tom Porterfield

[Mattias Sjögren]

Brian,

FWIW, sizeof(bool) can be used without unsafe in C# v2.

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[Brian Keating]

Excellent!
I've moved to v2 as of last week.

Thanks a mill

Brian Keating
bfa Ireland

"Mattias Sjögren" wrote:

Brian,

FWIW, sizeof(bool) can be used without unsafe in C# v2.

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.