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// credits: http://janmatuschek.de/LatitudeLongitudeBoundingCoordinates | |
function dist(a, b) { | |
const [a0, a1, b0, b1] = [...a, ...b].map(x => x / 180 * Math.PI); | |
const { acos, sin, cos } = Math; | |
return acos(sin(a0) * sin(b0) + cos(a0) * cos(b0) * cos(a1 - b1)) * 6371; | |
} |
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<? | |
$arSections = array_reduce($arResult["SECTIONS"], function($carry, $section){ | |
if (empty($section["IBLOCK_SECTION_ID"])) { // depth 1 | |
$section["LEVEL2_ITEMS"] = []; | |
$carry[$section["ID"]] = $section; | |
} else { // level |
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{ | |
// ..... | |
enqueue: function(items, get_promise, num_threads){ | |
num_threads = num_threads || 1; | |
var dfd = $.Deferred(), i = 0, num_total = items.length, num_active = 0, num_done = 0, | |
next = function(){ | |
while (num_active < num_threads && i < num_total) { | |
num_active++; | |
get_promise(items[i++]).done(function(){ |
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// thanks to rniemeyer! | |
// http://www.knockmeout.net/2011/06/lazy-loading-observable-in-knockoutjs.html | |
ko.extenders.lazy = function(target, callback){ | |
var result = ko.computed({ | |
read: function(){ | |
if (!result.loaded()) callback.call(context); | |
return target(); | |
}, |