kunjiang / cross-productor

sku 生成

sku 生成算法

用于根据成品项的列表生成可用的所有组合. 逻辑上可以理解为生成给定多个集合(数组)的笛卡尔积.

用法:

const { crossProductor } = require( 'cross-productor' );

let data = [
  [ '白色', '黑色' ],
  [ 37, 38, 39, 40, 41, 42 ]
];

let res = crossProductor( data );
// => 
// [ 
//   [ '白色', 37 ], [ '白色', 38 ], [ '白色', 39 ], [ '白色', 40 ], [ '白色', 41 ], [ '白色', 42 ], 
//   [ '黑色', 37 ], [ '黑色', 38 ], [ '黑色', 39 ], [ '黑色', 40 ], [ '黑色', 41 ], [ '黑色', 42 ], 
// ]

如果数组中的数组是对象, 默认生成时使用浅拷贝, 如果需要深拷贝, 可以传入第二个参数. 例如:

let res = crossProductor( data, true ); // 对每一个成员进行深拷贝

如果仅有一个集合, 则生成以元素为集合的集合, 即

const { crossProductor } = require( 'cross-productor' );

let data = [
  [ '白色', '黑色' ]
];

let res = crossProductor( data );
// => 
// [ 
//   [ '白色' ], 
//   [ '黑色' ], 
// ]

sku generating arithmetic

To generate all combination of product list. In fact, it's to give Cartesian Product of multiple sets ( product types array ).

Usage:

const { crossProductor } = require( 'cross-productor' );

let data = [
  [ 'white', 'black' ],
  [ 37, 38, 39, 40, 41, 42 ]
];

let res = crossProductor( data );
// => 
// [ 
//   [ 'white', 37 ], [ 'white', 38 ], [ 'white', 39 ], [ 'white', 40 ], [ 'white', 41 ], [ 'white', 42 ], 
//   [ 'black', 37 ], [ 'black', 38 ], [ 'black', 39 ], [ 'black', 40 ], [ 'black', 41 ], [ 'black', 42 ], 
// ]

Default, use shallow copy to generate, if the item of two-dimensional array is object. But, you can pass true to the second parameter in function crossProductor, it will use deep copy. For example:

let res = crossProductor( data, true ); // will use deep copy for element of set

However, just only one set, it will make a set that element is a set. like:

const { crossProductor } = require( 'cross-productor' );

let data = [
  [ 'white', 'black' ]
];

let res = crossProductor( data );
// => 
// [ 
//   [ 'white' ], 
//   [ 'black' ], 
// ]