I've got this filter for breaking up an array into smaller arrays based on
the "size" argument. Here's a jsbin of the non-working
version: http://jsbin.com/UmOMAgA/80/edit
Check out some previous revisions (a lot of people have toyed around with
it) for the working version using a cache.
app.filter('partition', function() {
return function(arr, size) {
var newArr = [];
for (var i=0; i<arr.length; i+=size) {
newArr.push(arr.slice(i, i+size));
}
return newArr;
};
});
This causes an infinite digest. I think that's because of the new nested
arrays. The only solution I've found is to do some awkward caching with
JSON strings:
app.filter('partition', function($cacheFactory) {
var arrayCache = $cacheFactory('partition');
var filter = function(arr, size) {
if (!arr) { return; }
var newArr = [];
for (var i=0; i<arr.length; i+=size) {
newArr.push(arr.slice(i, i+size));
}
var cachedParts;
var arrString = JSON.stringify(arr);
cachedParts = arrayCache.get(arrString+size);
if (JSON.stringify(cachedParts) === JSON.stringify(newArr)) {
return cachedParts;
}
arrayCache.put(arrString+size, newArr);
return newArr;
};
return filter;
});
There's got to be a better way, right!?
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