I am trying to check relative path on Linux for exists.

import std.stdio;
import std.path;
import std.file;
import std.string;



string mypath = "~/Documents/imgs";

void main()
{
 if(!mypath.exists)
	{
		writeln(mypath, " do not exists");		
	}

 if(!mypath.exists)
	{
		writeln(mypath, " do not exists");		
	}

 if("/home/dima/Documents/imgs".exists)
	{
		writeln("/home/dima/Documents/imgs");
		writeln("Dir exists");
	}

}

~/Documents/imgs always return "do not exists". But full path: "/home/dima/Documents/imgs" is "Dir exists".

Why? It's same paths!

On Monday, 29 February 2016 at 14:50:51 UTC, Suliman wrote:
> I am trying to check relative path on Linux for exists.
>
> import std.stdio;
> import std.path;
> import std.file;
> import std.string;
>
>
>
> string mypath = "~/Documents/imgs";
>
> void main()
> {
>  if(!mypath.exists)
> 	{
> 		writeln(mypath, " do not exists");		
> 	}
>
>  if(!mypath.exists)
> 	{
> 		writeln(mypath, " do not exists");		
> 	}
>
>  if("/home/dima/Documents/imgs".exists)
> 	{
> 		writeln("/home/dima/Documents/imgs");
> 		writeln("Dir exists");
> 	}
>
> }
>
> ~/Documents/imgs always return "do not exists". But full path: "/home/dima/Documents/imgs" is "Dir exists".
>
> Why? It's same paths!

~ is expanded by your shell. It is not a relative path, and system calls do not recognize it (same with environmental variables).

See also http://stackoverflow.com/questions/3616595/why-mkdir-fails-to-work-with-tilde

On Monday, 29 February 2016 at 14:58:46 UTC, Alex Parrill wrote:
> On Monday, 29 February 2016 at 14:50:51 UTC, Suliman wrote:
>> I am trying to check relative path on Linux for exists.
>>
>> string mypath = "~/Documents/imgs";
>
> ~ is expanded by your shell. It is not a relative path, and system calls do not recognize it (same with environmental variables).

D can expand tilde with expandTilde:

import std.path : expandTilde;
string mypath = expandTilde("~/Documents/imgs");