function sift(query, array, getter) {
if (isFunction(array)) {
getter = array;
array = void 0;
}
var validator = createRootValidator(query, getter);
function filter(b) {
return validate(validator, b);
}
if (array) {
return array.filter(filter);
}
return filter;
}...
<body>
</body>
</html>
```
## API
### .sift(filter[, array][, selectorFn])
- `filter` - the filter to use against the target array
- `array` - sifts against target array. Without this, a function is returned
- `selectorFn` - selector for the values within the array.
With an array:
...compare = function (a, b) {
if(a===b) return 0;
if(typeof a === typeof b) {
if (a > b) {
return 1;
}
if (a < b) {
return -1;
}
}
}n/a
indexOf = function (query, array, getter) {
return search(array, createRootValidator(query, getter));
}...
{
name: 'tim',
address: {
city: 'St. Paul'
}
}];
var index = sift.indexOf({ address: { city: 'Minneapolis' }}, people); // index
= 0
```
...use = function (plugin) {
if (isFunction(plugin)) return plugin(sift);
for (var key in plugin) {
if (key.charCodeAt(0) === 36) {
operator[key] = plugin[key];
}
}
}...
## Custom Expressions
You can add your own expressions. For instance - say you want to do some bitmask filtering, you could add this example:
```javascript
sift.use({
$band: function(a, b) {
return (a & b) ? 0 : -1; // 0 = exists, -1 = doesn't exist
}
});
// ops
var IS_ANIMAL = 2,
...