I must confess that secretly the article I wrote last time (in which I introduced ndarrays) was just a pretext to introduce the stuff that I am going to write about today: which is the cwise library for array operations in JavaScript. Array operations Briefly, array operations are component-wise operations that can be applied across multiple multidimensional arrays simultaneously. Array operation
![Cache oblivious array operations](https://cdn-ak-scissors.b.st-hatena.com/image/square/8f9084726ee9757d3f9b108e87dd0b161bfa39b2/height=288;version=1;width=512/https%3A%2F%2F0fps.net%2Fwp-content%2Fuploads%2F2013%2F05%2Fchart_1-3.png)