Understanding common std.Io.Reader/Writer mistakes (0.15.1)

[phatchman]

@gonzo

Also, how would I write a loop to read stdin line by line? takeDelimiterExclusive() returns EndOfStream as a possible error, but not an optional – how do I use it ergonomically from a while loop?

I think this is the most common pattern:

while (stdin.takeDelimiterExclusive('\n')) |line| {
        // do stuff with line
    } else |err| {
        if (err != error.EndOfStream) return err;
        // handle other errors if needed.
    }
}