Delete CartesianProduct.mjs

src/core/operations/CartesianProduct.mjs

@@ -1,97 +0,0 @@
-/**
- * @author d98762625 [d98762625@gmail.com]
- * @copyright Crown Copyright 2018
- * @license Apache-2.0
- */
-
-import Operation from "../Operation.mjs";
-import OperationError from "../errors/OperationError.mjs";
-
-/**
- * Set cartesian product operation
- */
-class CartesianProduct extends Operation {
-
-    /**
-     * Cartesian Product constructor
-     */
-    constructor() {
-        super();
-
-        this.name = "Cartesian Product";
-        this.module = "Default";
-        this.description = "Calculates the cartesian product of multiple sets of data, returning all possible combinations.";
-        this.infoURL = "https://wikipedia.org/wiki/Cartesian_product";
-        this.inputType = "string";
-        this.outputType = "string";
-        this.args = [
-            {
-                name: "Sample delimiter",
-                type: "binaryString",
-                value: "\\n\\n"
-            },
-            {
-                name: "Item delimiter",
-                type: "binaryString",
-                value: ","
-            },
-        ];
-    }
-
-    /**
-     * Validate input length
-     *
-     * @param {Object[]} sets
-     * @throws {OperationError} if fewer than 2 sets
-     */
-    validateSampleNumbers(sets) {
-        if (!sets || sets.length < 2) {
-            throw new OperationError("Incorrect number of sets, perhaps you" +
-                " need to modify the sample delimiter or add more samples?");
-        }
-    }
-
-    /**
-     * Run the product operation
-     *
-     * @param {string} input
-     * @param {Object[]} args
-     * @returns {string}
-     * @throws {OperationError}
-     */
-    run(input, args) {
-        [this.sampleDelim, this.itemDelimiter] = args;
-        const sets = input.split(this.sampleDelim);
-
-        this.validateSampleNumbers(sets);
-
-        return this.runCartesianProduct(...sets.map(s => s.split(this.itemDelimiter)));
-    }
-
-    /**
-    * Return the cartesian product of the two inputted sets.
-    *
-    * @param {Object[]} a
-    * @param {Object[]} b
-    * @param {Object[]} c
-    * @returns {string}
-    */
-    runCartesianProduct(a, b, ...c) {
-        /**
-         * https://stackoverflow.com/a/43053803/7200497
-         * @returns {Object[]}
-         */
-        const f = (a, b) => [].concat(...a.map(d => b.map(e => [].concat(d, e))));
-        /**
-         * https://stackoverflow.com/a/43053803/7200497
-         * @returns {Object[][]}
-         */
-        const cartesian = (a, b, ...c) => (b ? cartesian(f(a, b), ...c) : a);
-
-        return cartesian(a, b, ...c)
-            .map(set => `(${set.join(",")})`)
-            .join(this.itemDelimiter);
-    }
-}
-
-export default CartesianProduct;