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 | 28x 28x 50x 50x 50x 50x 50x 28x 28x 20406x 20406x 18771x 20406x 28x 28x 31084x 31084x 30653x 30653x 31084x 31084x 30653x 30653x 31084x 31084x 31084x 31084x 28x 28x 19158x 19158x 15189x 15189x 19158x 19158x 19158x 19158x 19158x 19158x 19158x 19158x 19158x 19158x 28x 865x 865x 865x 28x 28x 28x 28x 28x 28x 28x 28x | '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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