strange file behaviour

[Ali Çehreli]

On 03/04/2012 11:43 AM, maarten van damme wrote:
 > hello,
 > I wrote this little test:
 > import std.stdio;
 >
 > void main(){
 > auto testfile=new File("test.txt");

That is a pointer but lines() takes a File. Either construct testfile 
like this:

     auto testfile = File("test.txt");

or use lines(*testfile) in the foreach loop.

 >   foreach(string line;lines(testfile))
 > writeln(line);
 > }
 > and get as error
 > src\main.d(6): Error: constructor std.stdio.lines.this (File f, dchar
 > terminator = cast(dchar)'\x0a') is not callable using argument types 
(File*)
 > src\main.d(6): Error: cannot implicitly convert expression (testfile) of
 > type File* to File
 >
 > Why?
 > I've also noticed the argument to lines in the example was a stream 
but now
 > it claims to be a File. when I feed it a File it complains it is given a
 > *File... what am I doing wrong?
 >

Just a reminder that "If line has type char[], wchar[], dchar[], the 
line's con­tent will be reused (over­writ­ten) across reads.":

   http://dlang.org/phobos/std_stdio.html#lines

Ali