Is D Language mature for MMORPG Client ?

[Araq]

On Tuesday, 7 August 2012 at 10:28:00 UTC, Franciszek Czekała 
wrote:
> I spent far to much time with Ada (I have and I have read quite 
> a pile of books on this language). When I tried to write some 
> sample programs with GNAT using advanced features of this 
> language I immediately hit on bugs so ridiculous that I was 
> thrown off the language for good.

For example?


> There are no free compilers of this language (which you could 
> freely use to write commercial programs, like for example 
> games), no affordable commercial compilers (which you could buy 
> for ~$500). Ada as a language is DEAD.

FSF's GNAT in GCC is GPL with linking exception, like the rest of 
GCC.
If you say "you can't build commercial software" with this, you 
can't build commercial software with GCC either.

> And you certainly heard about the Ada related catastrophe of 
> the Ariadne rocket? So much for "safety". Ada is dead and 
> should not be touched with a mile pole.
>

http://en.wikipedia.org/wiki/Ariane_5

"Ariane 5's first test flight (Ariane 5 Flight 501) on 4 June 
1996 failed, with the rocket self-destructing 37 seconds after 
launch because of a malfunction in the control software.[14] A 
data conversion from 64-bit floating point value to 16-bit signed 
integer value to be stored in a variable representing horizontal 
bias caused a processor trap (operand error)[15] because the 
floating point value was too large to be represented by a 16-bit 
signed integer. The software was originally written for the 
Ariane 4 where efficiency considerations (the computer running 
the software had an 80% maximum workload requirement[15]) led to 
4 variables being protected with a handler while 3 others, 
including the horizontal bias variable, were left unprotected 
because it was thought that they were "physically limited or that 
there was a large margin of error".[15] The software, written in 
Ada, was included in the Ariane 5 through the reuse of an entire 
Ariane 4 subsystem despite the fact that the particular software 
containing the bug, which was just a part of the subsystem, was 
not required by the Ariane 5 because it has a different 
preparation sequence[15] than the Ariane 4."