As part of a program I've been writing, I have a subroutine that iterates through a given file, line by line. It does not begin operating until it receives an EOF, however. If I give it a normal file, it's not a problem, but when I pass it STDIN, I need to operate on the incoming lines before EOF. Any ideas? 
sub send_file {
    $_ = shift;
    foreach(<$_>) {
        sleep $time;
        print;
    }
    return(0);
}

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send_file(\*FILE); works fine b/c EOF arrives immediately, but send_file(\*STDIN); won't begin until I close the input stream.

In reply to Looping line-by-line through STDIN before EOF is received by isotope

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