vtm/source/helpers/list.ts

/*
 * Verrückte Turing-Maschinen — A turing complete game
 * Copyright (C) 2016-2018 kcf <vidofnir@folksprak.org>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

module lib_list
	{
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export function sequence
			(
				length : int
			)
			: Array<int>
			{
				return ((length <= 0) ? [] : sequence(length-1).concat([length-1]));
			}
		
		
		/**
		 * @author kcf <vidofnir@folksprak.org>
		 */
		export function copy<type_element>
			(
				list : ReadonlyArray<type_element>,
				copy_element : (element : type_element)=>type_element = (x => x)
			)
			: Array<type_element>
			{
				return list.map(copy_element);
			}
		
	}