in reply to Re^2: [OT] Mysterious function.
in thread [OT] Mysterious function. (Updated)

Excellent! :) Yes, node.js allows you to run JS at the command line. It is quite a handy tool to have at your disposal: 

var last = 0
var step = 2500
for (var i = 1; i <= 100*365.25*24*60*60*1000; i += step) {
    j = _DateInterval( i )
    if ( j > last ) {
        console.log( i + ' -> ' + j );
        step = ( j - last ) / 10;
        last = j;
    }
}

function _DateInterval( vv ) {

 ....
}

[download]

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)

In Section Seekers of Perl Wisdom