Go Programming talk [OT]

[Nick Sabalausky]

"Walter Bright" <newshound1 at digitalmars.com> wrote in message 
news:hujd7m$11gj$1 at digitalmars.com...
> Adam Ruppe wrote:
>> That sucks hard. I prefer it to finally{} though, since finally
>> doesn't scale as well in code complexity (it'd do fine in this case,
>> but not if there were nested transactions), but both suck compared to
>> the scalable, beautiful, and *correct* elegance of D's scope guards.
>
> I agree. D's scope statement looks fairly innocuous and one can easily 
> pass it by with "blah, blah, another statement, blah, blah" but the more I 
> use it the more I realize it is a
>
> game changer
>
> in how one writes code. For example, here's the D1 implementation of 
> std.file.read:
>
> -------------------------------------------------------------
> /********************************************
>  * Read file name[], return array of bytes read.
>  * Throws:
>  *      FileException on error.
>  */
>
> void[] read(char[] name)
> {
>     DWORD numread;
>     HANDLE h;
>
>     if (useWfuncs)
>     {
>         wchar* namez = std.utf.toUTF16z(name);
>         h = 
> CreateFileW(namez,GENERIC_READ,FILE_SHARE_READ,null,OPEN_EXISTING,
>             FILE_ATTRIBUTE_NORMAL | 
> FILE_FLAG_SEQUENTIAL_SCAN,cast(HANDLE)null);
>     }
>     else
>     {
>         char* namez = toMBSz(name);
>         h = 
> CreateFileA(namez,GENERIC_READ,FILE_SHARE_READ,null,OPEN_EXISTING,
>             FILE_ATTRIBUTE_NORMAL | 
> FILE_FLAG_SEQUENTIAL_SCAN,cast(HANDLE)null);
>     }
>
>     if (h == INVALID_HANDLE_VALUE)
>         goto err1;
>
>     auto size = GetFileSize(h, null);
>     if (size == INVALID_FILE_SIZE)
>         goto err2;
>
>     auto buf = std.gc.malloc(size);
>     if (buf)
>         std.gc.hasNoPointers(buf.ptr);
>
>     if (ReadFile(h,buf.ptr,size,&numread,null) != 1)
>         goto err2;
>
>     if (numread != size)
>         goto err2;
>
>     if (!CloseHandle(h))
>         goto err;
>
>     return buf[0 .. size];
>
> err2:
>     CloseHandle(h);
> err:
>     delete buf;
> err1:
>     throw new FileException(name, GetLastError());
> }
> ----------------------------------------------------------
>

Looking at that, if I didn't know better, I would think you were a VB 
programmer ;)