Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | 25x 25x 52x 52x 52x 52x 52x 25x 25x 23668x 23668x 21937x 23668x 25x 25x 55115x 55115x 54561x 54561x 55115x 55115x 54561x 54561x 55115x 55115x 55115x 55115x 25x 25x 39137x 39137x 34028x 34028x 39137x 39137x 39137x 39137x 39137x 39137x 39137x 39137x 39137x 39137x 25x 869x 869x 869x 25x 25x 25x 25x 25x 25x 25x 25x | 'use strict';
function init(list) {
list._idleNext = list;
list._idlePrev = list;
return list;
}
// Show the most idle item.
function peek(list) {
if (list._idlePrev === list) return null;
return list._idlePrev;
}
// Remove an item from its list.
function remove(item) {
if (item._idleNext) {
item._idleNext._idlePrev = item._idlePrev;
}
if (item._idlePrev) {
item._idlePrev._idleNext = item._idleNext;
}
item._idleNext = null;
item._idlePrev = null;
}
// Remove an item from its list and place at the end.
function append(list, item) {
if (item._idleNext || item._idlePrev) {
remove(item);
}
// Items are linked with _idleNext -> (older) and _idlePrev -> (newer).
// Note: This linkage (next being older) may seem counter-intuitive at first.
item._idleNext = list._idleNext;
item._idlePrev = list;
// The list _idleNext points to tail (newest) and _idlePrev to head (oldest).
list._idleNext._idlePrev = item;
list._idleNext = item;
}
function isEmpty(list) {
return list._idleNext === list;
}
module.exports = {
init,
peek,
remove,
append,
isEmpty
};
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