Re: Trait to identify if a type is a struct one

2017-10-18 Thread Ali Çehreli via Digitalmars-d-learn 

On 10/18/2017 10:05 AM, user1234 wrote:

On Wednesday, 18 October 2017 at 15:16:21 UTC, drug wrote:

18.10.2017 18:11, pham пишет:
Is there a way to identify if a type is a struct, something like 
isStruct

similar to isArray.

struct X
{
}

isStruct!X == true?

Also, there are isAbstractClass & isFinalClass but want to check if 
type is a class regardless? something like isClass?


Thanks
Pham


if (is(X == struct))
{
   ...
}


static if (is(X == struct))
{
    ...
}

ptherwise lots of strnage errors ;)



Playing the devil's advocate, I think drug meant it as a function 
template constraint. :o)


void foo(X)(X x)
if (is(X == struct))
{
   // ...
}

Ali

Re: Trait to identify if a type is a struct one

2017-10-18 Thread user1234 via Digitalmars-d-learn 

On Wednesday, 18 October 2017 at 15:16:21 UTC, drug wrote:

18.10.2017 18:11, pham пишет:
Is there a way to identify if a type is a struct, something 
like isStruct

similar to isArray.

struct X
{
}

isStruct!X == true?

Also, there are isAbstractClass & isFinalClass but want to 
check if type is a class regardless? something like isClass?


Thanks
Pham


if (is(X == struct))
{
   ...
}


static if (is(X == struct))
{
   ...
}

ptherwise lots of strnage errors ;)

Re: Trait to identify if a type is a struct one

2017-10-18 Thread drug via Digitalmars-d-learn 

18.10.2017 18:11, pham пишет:

Is there a way to identify if a type is a struct, something like isStruct
similar to isArray.

struct X
{
}

isStruct!X == true?

Also, there are isAbstractClass & isFinalClass but want to check if type 
is a class regardless? something like isClass?


Thanks
Pham


if (is(X == struct))
{
   ...
}

Trait to identify if a type is a struct one

2017-10-18 Thread pham via Digitalmars-d-learn 
Is there a way to identify if a type is a struct, something like 
isStruct

similar to isArray.

struct X
{
}

isStruct!X == true?

Also, there are isAbstractClass & isFinalClass but want to check 
if type is a class regardless? something like isClass?


Thanks
Pham