nodejsのlodash/underscoreを使って2つの配列の違いを見つける方法

Question

私は2つの配列の配列を持っていて、違いを見つけることを試みています。

c = [[ 2, 21, 27, 30, 33, 40 ], 
    [ 6, 11, 12, 21, 34, 48 ], 
    [ 1, 10, 17, 31, 35, 40 ], 
    [ 1, 18, 26, 33, 36, 45 ], 
    [ 15, 21, 22, 24, 38, 46 ], 
    [ 5, 17, 21, 27, 29, 41 ], 
    [ 3, 7, 12, 16, 20, 28 ], 
    [ 9, 12, 13, 18, 30, 37 ], 
    [ 3, 19, 21, 31, 33, 46 ], 
    [ 6, 11, 16, 18, 20, 34 ], 
    [ 1, 3, 11, 13, 24, 28 ], 
    [ 12, 13, 16, 40, 42, 46 ], 
    [ 1, 3, 5, 36, 37, 41 ], 
    [ 14, 15, 23, 24, 26, 31 ], 
    [ 7, 13, 14, 15, 27, 28 ]]; 

私はアンダースコアしようとした：

_ = require('underscore'); 
_.difference(a,b); 

をしかし、それは動作しません、私が見つけるだろうどのように

var a = [[ 11, 24, 28, 38, 42, 44 ], 
    [ 7, 19, 21, 22, 29, 38 ], 
    [ 2, 21, 27, 30, 33, 40 ], 
    [ 6, 11, 12, 21, 34, 48 ], 
    [ 1, 10, 17, 31, 35, 40 ], 
    [ 1, 18, 26, 33, 36, 45 ], 
    [ 15, 21, 22, 24, 38, 46 ], 
    [ 5, 17, 21, 27, 29, 41 ], 
    [ 3, 7, 12, 16, 20, 28 ], 
    [ 9, 12, 13, 18, 30, 37 ], 
    [ 3, 19, 21, 31, 33, 46 ], 
    [ 6, 11, 16, 18, 20, 34 ], 
    [ 1, 3, 11, 13, 24, 28 ], 
    [ 12, 13, 16, 40, 42, 46 ], 
    [ 1, 3, 5, 36, 37, 41 ], 
    [ 14, 15, 23, 24, 26, 31 ], 
    [ 7, 13, 14, 15, 27, 28 ]]; 

var b = [[ 4, 7, 9, 21, 31, 36 ], 
    [ 2, 5, 6, 12, 15, 21 ], 
    [ 4, 7, 8, 15, 38, 41 ], 
    [ 11, 24, 28, 38, 42, 44 ], 
    [ 7, 19, 21, 22, 29, 38 ]]; 

。

私も試してみましたlodash：

_ = require('lodash'); 
_.differenceBy(a,b); 

を、それはどちらか動作しません。

私はここで間違っていますか？

Answer 1

使用_.differenceWith、とのように、二つの配列を比較するコンパレータを渡す：

_.differenceWith(a, b, _.isEqual);