Recursive function call

[monarch_dodra via Digitalmars-d-learn]

On Wednesday, 24 September 2014 at 10:57:27 UTC, Suliman wrote:
> string getFileName()
> {
> 	//чтобы было проще обрабатываемый файл будем хранить рядом с 
> бинариком
> 	string filename = chomp(readln());
> 	string path = getcwd();
> 	writeln((path ~ "\\" ~ filename));
> 	if (exists(path ~ "\\" ~ filename))
> 		return (path ~ "\\" ~ filename);

Don't do `path ~ "\\" ~ filename`. Instead, use 
"std.path.buildPath". It's more portable, faster, and convenient.

Also, you should store the result in a named variable, or you'll 
reallocate a new string everytime.

> 	else
> 	{
> 		writeln("File do not exists. Please try again");
> 		getFilename(); //I need something similar, to call function 
> again.
> 	}
> 	
> }
>
>
> In case of error, how I can call function getFileName again?

Any kind of looping control structure would work. I'd advocate 
the while(1) loop with a break or return:

while(1)
{
   string filename = chomp(readln());
   string path = getcwd();
   string fullPath = buildPath(path, filename);
   if (exists(fullPath))
     return fullPath;
   writeln("File does not exists. Please try again");
}