http://d.puremagic.com/issues/show_bug.cgi?id=4875

           Summary: Allow struct initialization with constructor
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: websites
        AssignedTo: nob...@puremagic.com
        ReportedBy: dfj1es...@sneakemail.com


--- Comment #0 from Sobirari Muhomori <dfj1es...@sneakemail.com> 2010-09-15 
14:45:38 PDT ---
If we have a struct
---
struct HANDLE
{
    size_t Value=-1;
    this(void *ptrValue)
    {
        Value=cast(size_t)ptrValue;
    }
    this(size_t intValue)
    {
        Value=intValue;
    }
}
---
it's possible to initialize variables of type HANDLE with values of types void*
and size_t:
---
HANDLE h1=4, h2=null;
---
But it's impossible to initialize class fields and function arguments in the
same way:
---
class File
{
    HANDLE Handle=5; //cannot implicitly convert expression (5) of type int to
HANDLE
}

void FFFF(HANDLE){}
FFFF(5);
FFFF(null); //cannot implicitly convert expression (null) of type void* to
HANDLE
---
This complicates porting from C because in C it's a common practice to pass
null as a function argument for a handle value.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

Reply via email to