Re: 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");
}