Phobos function to check if files are identical?

[H. S. Teoh via Digitalmars-d-learn]

On Mon, Mar 13, 2017 at 10:47:09AM -0700, H. S. Teoh via Digitalmars-d-learn wrote:
[...]
> P.S. I just realized that std.stdio.chunks() doesn't return a range.
> Bah. File an enhancement request. I might even submit a PR for it. ;-)
[...]
> P.P.S.  It's not overly hard to write an alternative version of
> std.stdio.chunks that returns a real range.
[...]

Bah, I'm an idiot.  Just use File.byChunk instead of .chunks. Here's a
fully-working example:

	import std.stdio;

	bool equal(File f1, File f2)
	{
		import std.algorithm.comparison : equal;
		enum bufSize = 4096;
		return f1.byChunk(bufSize).equal(f2.byChunk(bufSize));
	}

	int main(string[] args) {
		if (args.length < 3)
		{
			stderr.writeln("Please specify filenames");
			return 1;
		}

		if (equal(File(args[1]), File(args[2])))
			writeln("Files are identical.");
		else
			writeln("Files differ.");
		return 0;
	}


T

-- 
INTEL = Only half of "intelligence".