language: D (dmd) (dmd-2.042)
date: 142 days 15 hours ago
link:
visibility: public 
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import std.stdio;
 
void main() {
    ulong lines = 0;
    double sumLength = 0;
    foreach (line; stdin.byLine()) {
        ++lines;
        sumLength += line.length;
    }
    writeln("Average line length: ",
        lines ? sumLength / lines : 0);
}