Hi All,

 Can any one guide me what is wrong with the below code , whil i run the code without any arguments is am getting the below exception

Execution :
rdmd Summary.d - Not working
rdmd Summary.d test - Working

Program:

void main (string[] args)
{
 if(args.length != 2 )
    writefln("Unknown operation: %s", args[1]);
}

core.exception.RangeError@Summary.d(197): Range violation
----------------
0x00416218
0x0041AA8F
0x0041AA53
0x0041A954
0x00413C0F
0x75EB336A in BaseThreadInitThunk
0x776B9902 in RtlInitializeExceptionChain
0x776B98D5 in RtlInitializeExceptionChain

From,
Vino.B

On 08/23/2017 07:45 AM, Vino.B wrote:
> Execution :
> rdmd Summary.d - Not working
> rdmd Summary.d test - Working
> 
> Program:
> 
> void main (string[] args)
> {
>   if(args.length != 2 )
>      writefln("Unknown operation: %s", args[1]);
> }

When args.length == 1, then the one element is args[0], not args[1].

args[1] only exists when args.length >= 2.

On Wednesday, 23 August 2017 at 05:53:46 UTC, ag0aep6g wrote:
> On 08/23/2017 07:45 AM, Vino.B wrote:
>> Execution :
>> rdmd Summary.d - Not working
>> rdmd Summary.d test - Working
>> 
>> Program:
>> 
>> void main (string[] args)
>> {
>>   if(args.length != 2 )
>>      writefln("Unknown operation: %s", args[1]);
>> }
>
> When args.length == 1, then the one element is args[0], not args[1].
>
> args[1] only exists when args.length >= 2.

To expand on that: argv[0] is what is passed to the process the D program runs at in the system call it was spawned from (e.g. execve), which usually corresponds to the program's name.

On Wednesday, 23 August 2017 at 11:18:14 UTC, Moritz Maxeiner wrote:
> On Wednesday, 23 August 2017 at 05:53:46 UTC, ag0aep6g wrote:
>> On 08/23/2017 07:45 AM, Vino.B wrote:
>>> Execution :
>>> rdmd Summary.d - Not working
>>> rdmd Summary.d test - Working
>>> 
>>> Program:
>>> 
>>> void main (string[] args)
>>> {
>>>   if(args.length != 2 )
>>>      writefln("Unknown operation: %s", args[1]);
>>> }
>>
>> When args.length == 1, then the one element is args[0], not args[1].
>>
>> args[1] only exists when args.length >= 2.
>
> To expand on that: argv[0] is what is passed to the process the D program runs at in the system call it was spawned from (e.g. execve), which usually corresponds to the program's name.

Hi All,

  Thank you very much, was able to resolve this issue.

From,
Vino.B