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dotnet clr
group:Primitive Type Definition
dotnet clr:
Up till now (at least in my opinion) the definition of a primitive type has been at a language level. You can refer to this definition on msdn at ms-help://MS.NETFrameworkSDKv1.1/vblsnet/html/vblrfVBSpec6_2.htm However, in reading Jeffrey Richters book (Applied Microsoft .NET Framework Programming), he mentions the term "CLR primitive values" and illustrates that at the "CLR level", Decimal is not a primitive type. I guess my question is: At what level do we make the decision as to whether a type is a "primitive type"? At both the language and CLR level? Is there another name/term/defintion for "types" that have specific IL instructions that manipulate their values? I'm interested to know what people's opinions are. Thanks. ice
[quoted text, click to view] "Jon Skeet [C# MVP]" <skeet@pobox.com> wrote in message news:MPG.1c60007428034b6e98bc6d@msnews.microsoft.com... > Ice <ice@nospam.com> wrote: > > Up till now (at least in my opinion) the definition of a primitive type has > > been at a language level. You can refer to this definition on msdn at > > ms-help://MS.NETFrameworkSDKv1.1/vblsnet/html/vblrfVBSpec6_2.htm > > > > However, in reading Jeffrey Richters book (Applied Microsoft .NET Framework > > Programming), he mentions the term "CLR primitive values" and illustrates > > that at the "CLR level", Decimal is not a primitive type. > > > > I guess my question is: At what level do we make the decision as to whether > > a type is a "primitive type"? At both the language and CLR level? Is there > > another name/term/defintion for "types" that have specific IL instructions > > that manipulate their values? > > > > I'm interested to know what people's opinions are. > > C# defines simple types but not primitive types. (It mentions > "primitive" types, but always in quotes as a sort of "you know what I > mean here" rather than defining them.) I think the CLR level is really > the one it makes sense to define primitive types at. > > -- > Jon Skeet - <skeet@pobox.com> > http://www.pobox.com/~skeet > If replying to the group, please do not mail me too Yeah, just saw that in the C# language specification although the VB specification uses "primitive" type. You would think that it would be consistent. Books also use "primitive" type.
[quoted text, click to view]
Ice <ice@nospam.com> wrote: > Up till now (at least in my opinion) the definition of a primitive type has > been at a language level. You can refer to this definition on msdn at > ms-help://MS.NETFrameworkSDKv1.1/vblsnet/html/vblrfVBSpec6_2.htm > > However, in reading Jeffrey Richters book (Applied Microsoft .NET Framework > Programming), he mentions the term "CLR primitive values" and illustrates > that at the "CLR level", Decimal is not a primitive type. > > I guess my question is: At what level do we make the decision as to whether > a type is a "primitive type"? At both the language and CLR level? Is there > another name/term/defintion for "types" that have specific IL instructions > that manipulate their values? > > I'm interested to know what people's opinions are. C# defines simple types but not primitive types. (It mentions "primitive" types, but always in quotes as a sort of "you know what I mean here" rather than defining them.) I think the CLR level is really the one it makes sense to define primitive types at. -- Jon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet
CLR types can be bifurcated as value types and reference types. Primitive
types are some commonly used types like Int32, Single, String, and Boolean are primitive types. These types generally have aliases defined in languages. All primitive types except string are value types. Mujtaba. [quoted text, click to view] "Ice" <ice@nospam.com> wrote in message news:%23uLGcarAFHA.1524@TK2MSFTNGP09.phx.gbl... > > "Jon Skeet [C# MVP]" <skeet@pobox.com> wrote in message > news:MPG.1c60007428034b6e98bc6d@msnews.microsoft.com... > > Ice <ice@nospam.com> wrote: > > > Up till now (at least in my opinion) the definition of a primitive type > has > > > been at a language level. You can refer to this definition on msdn at > > > ms-help://MS.NETFrameworkSDKv1.1/vblsnet/html/vblrfVBSpec6_2.htm > > > > > > However, in reading Jeffrey Richters book (Applied Microsoft .NET > Framework > > > Programming), he mentions the term "CLR primitive values" and > illustrates > > > that at the "CLR level", Decimal is not a primitive type. > > > > > > I guess my question is: At what level do we make the decision as to > whether > > > a type is a "primitive type"? At both the language and CLR level? Is > there > > > another name/term/defintion for "types" that have specific IL > instructions > > > that manipulate their values? > > > > > > I'm interested to know what people's opinions are. > > > > C# defines simple types but not primitive types. (It mentions > > "primitive" types, but always in quotes as a sort of "you know what I > > mean here" rather than defining them.) I think the CLR level is really > > the one it makes sense to define primitive types at. > > > > -- > > Jon Skeet - <skeet@pobox.com> > > http://www.pobox.com/~skeet > > If replying to the group, please do not mail me too > > Yeah, just saw that in the C# language specification although the VB > specification uses "primitive" type. You would think that it would be > consistent. Books also use "primitive" type. > >
[quoted text, click to view]
Mujtaba Syed <mujtaba@marlabs.com> wrote: > CLR types can be bifurcated as value types and reference types. Primitive > types are some commonly used types like Int32, Single, String, and Boolean > are primitive types. These types generally have aliases defined in > languages. All primitive types except string are value types. Actually, String isn't a primitive type. From MSDN: <quote> The primitive types are Boolean, Byte, SByte, Int16, UInt16, Int32, UInt32, Int64, UInt64, Char, Double, and Single. </quote> -- Jon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet
so do you consider "decimal" to be a primitive?
[quoted text, click to view] "Mujtaba Syed" <mujtaba@marlabs.com> wrote in message news:uraXqVxAFHA.1564@TK2MSFTNGP09.phx.gbl... > CLR types can be bifurcated as value types and reference types. Primitive > types are some commonly used types like Int32, Single, String, and Boolean > are primitive types. These types generally have aliases defined in > languages. All primitive types except string are value types. > > Mujtaba. > > > "Ice" <ice@nospam.com> wrote in message > news:%23uLGcarAFHA.1524@TK2MSFTNGP09.phx.gbl... > > > > "Jon Skeet [C# MVP]" <skeet@pobox.com> wrote in message > > news:MPG.1c60007428034b6e98bc6d@msnews.microsoft.com... > > > Ice <ice@nospam.com> wrote: > > > > Up till now (at least in my opinion) the definition of a primitive > type > > has > > > > been at a language level. You can refer to this definition on msdn at > > > > ms-help://MS.NETFrameworkSDKv1.1/vblsnet/html/vblrfVBSpec6_2.htm > > > > > > > > However, in reading Jeffrey Richters book (Applied Microsoft .NET > > Framework > > > > Programming), he mentions the term "CLR primitive values" and > > illustrates > > > > that at the "CLR level", Decimal is not a primitive type. > > > > > > > > I guess my question is: At what level do we make the decision as to > > whether > > > > a type is a "primitive type"? At both the language and CLR level? Is > > there > > > > another name/term/defintion for "types" that have specific IL > > instructions > > > > that manipulate their values? > > > > > > > > I'm interested to know what people's opinions are. > > > > > > C# defines simple types but not primitive types. (It mentions > > > "primitive" types, but always in quotes as a sort of "you know what I > > > mean here" rather than defining them.) I think the CLR level is really > > > the one it makes sense to define primitive types at. > > > > > > -- > > > Jon Skeet - <skeet@pobox.com> > > > http://www.pobox.com/~skeet > > > If replying to the group, please do not mail me too > > > > Yeah, just saw that in the C# language specification although the VB > > specification uses "primitive" type. You would think that it would be > > consistent. Books also use "primitive" type. > > > > > >
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Ice <ice@nospam.com> wrote: > so do you consider "decimal" to be a primitive? No - nor is DateTime, which is probably the next most commonly used value type after the primitives. -- Jon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet
so the documentation is wrong or misleading.
eb [quoted text, click to view] "Jon Skeet [C# MVP]" <skeet@pobox.com> wrote in message news:MPG.1c61e1a473abf87a98bc7c@msnews.microsoft.com... > Ice <ice@nospam.com> wrote: > > so do you consider "decimal" to be a primitive? > > No - nor is DateTime, which is probably the next most commonly used > value type after the primitives. > > -- > Jon Skeet - <skeet@pobox.com> > http://www.pobox.com/~skeet > If replying to the group, please do not mail me too
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Ice <ice@nospam.com> wrote: > so the documentation is wrong or misleading. Well, it just means that the VB.NET idea of a primitive type isn't the same as the CLR's idea of a primitive type. That's somewhat confusing, but may well be historical. -- Jon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet
Dim t As Type = GetType(String)
Console.WriteLine("primtive {0}.", t.IsPrimitive) will display False. Ab. [quoted text, click to view] "Mujtaba Syed" <mujtaba@marlabs.com> wrote in message news:uraXqVxAFHA.1564@TK2MSFTNGP09.phx.gbl... > CLR types can be bifurcated as value types and reference types. Primitive > types are some commonly used types like Int32, Single, String, and Boolean > are primitive types. These types generally have aliases defined in > languages. All primitive types except string are value types. > > Mujtaba. > > > "Ice" <ice@nospam.com> wrote in message > news:%23uLGcarAFHA.1524@TK2MSFTNGP09.phx.gbl... > > > > "Jon Skeet [C# MVP]" <skeet@pobox.com> wrote in message > > news:MPG.1c60007428034b6e98bc6d@msnews.microsoft.com... > > > Ice <ice@nospam.com> wrote: > > > > Up till now (at least in my opinion) the definition of a primitive > type > > has > > > > been at a language level. You can refer to this definition on msdn at > > > > ms-help://MS.NETFrameworkSDKv1.1/vblsnet/html/vblrfVBSpec6_2.htm > > > > > > > > However, in reading Jeffrey Richters book (Applied Microsoft .NET > > Framework > > > > Programming), he mentions the term "CLR primitive values" and > > illustrates > > > > that at the "CLR level", Decimal is not a primitive type. > > > > > > > > I guess my question is: At what level do we make the decision as to > > whether > > > > a type is a "primitive type"? At both the language and CLR level? Is > > there > > > > another name/term/defintion for "types" that have specific IL > > instructions > > > > that manipulate their values? > > > > > > > > I'm interested to know what people's opinions are. > > > > > > C# defines simple types but not primitive types. (It mentions > > > "primitive" types, but always in quotes as a sort of "you know what I > > > mean here" rather than defining them.) I think the CLR level is really > > > the one it makes sense to define primitive types at. > > > > > > -- > > > Jon Skeet - <skeet@pobox.com> > > > http://www.pobox.com/~skeet > > > If replying to the group, please do not mail me too > > > > Yeah, just saw that in the C# language specification although the VB > > specification uses "primitive" type. You would think that it would be > > consistent. Books also use "primitive" type. > > > > > >
[quoted text, click to view] "Ice" <ice@nospam.com> wrote in message news:eIsgN87AFHA.3576@TK2MSFTNGP11.phx.gbl... > so do you consider "decimal" to be a primitive? u can check it with following code: Dim t As Type = GetType(Decimal) Console.WriteLine("primtive {0}.", t.IsPrimitive) It'll return false for decimal. Ab.
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