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Funkin/source/funkin/util/tools/MapTools.hx
2023-06-08 16:30:45 -04:00

36 lines
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Haxe

package funkin.util.tools;
/**
* A static extension which provides utility functions for Maps.
*
* For example, add `using MapTools` then call `map.values()`.
*
* @see https://haxe.org/manual/lf-static-extension.html
*/
class MapTools
{
/**
* Return the quantity of keys in the map.
*/
public static function size<K, T>(map:Map<K, T>):Int
{
return map.keys().array().length;
}
/**
* Return a list of values from the map, as an array.
*/
public static function values<K, T>(map:Map<K, T>):Array<T>
{
return [for (i in map.iterator()) i];
}
/**
* Return a list of keys from the map (as an array, rather than an iterator).
*/
public static function keyValues<K, T>(map:Map<K, T>):Array<K>
{
return map.keys().array();
}
}