Re: Setting default values for Main function's args Array

[Paul Backus via Digitalmars-d-learn]

On Thursday, 27 June 2019 at 17:05:05 UTC, Vaidas wrote:
Is it possible to set the default values for the Main 
function's arguments?
It seems that I'm getting Range error.
import std.stdio : writeln;
void main(string[] args = ["asdsfasdf", "asdklfajsdk", 
"asdfasdfasd"]){

   writeln("", args[1]);
}

Output:
vaidas@vaidas-SATELLITE-L855:~/Desktop$ rdmd newfile.d
core.exception.RangeError@newfile.d(4): Range violation
----------------
??:? _d_arrayboundsp [0x555f5b79f8e9]
??:? _Dmain [0x555f5b79e7ee]

Your main function is receiving an empty array as an argument, 
which overrides the default argument.

The correct way to do what you want to do is this:

void main(string[] args)
{
    string[] defaultArgs = ["my", "default", "arguments"];
    if (args.length == 0) {
        args = defaultArgs;
    }
    // Process args...
}