On Monday, 9 November 2015 at 18:18:19 UTC, J.Frank wrote:
On Monday, 9 November 2015 at 14:48:35 UTC, Ali Çehreli wrote:
import std.stdio;
import std.range;

void foo(I, O)(I in_stream, O out_stream)
        if (isInputRange!I &&
            isOutputRange!(O, ElementType!I)) {

    // in_stream.seek(3); // compile error - good :)

    foreach (element; in_stream) {
        out_stream.put(element);
    }
}

void main(string[] args)
{
    // Also consider .byLine, which is faster and risky
    foo(stdin.byLineCopy,
        stdout.lockingTextWriter);
}

Ali

Uhm... no. That's not a solution to my problem. Ranges are not (I/O-)streams.

Ranges are streams. file.byLine(Copy) and byChunk are effectively streams that are ranges.

The only problem with implementing your code in ranges is that `splitter` requires a forward range, which file-backed ranges aren't. Otherwise you could do `file.byChunk(4096).joiner.drop(3).splitter('\n')` to get a "stream" of lines.

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