The power of using aspheric lenses has been known for several centuries, starting with the formulas invented by Renee Descartes in the early 1600s. Although it was known that aspheric lenses had major advantages over their spherical counterparts, th
The primary interface for database programming in Perl is DBI. Programming the Perl DBI is coauthored by Alligator Descartes, one of the most active members of the DBI community, and by Tim Bunce, the inventor of DBI. The book explains the architect
This text explains how to use mathematical models and methods to analyze problems that arise in computer science. Proofs play a central role in this work because the authors share a belief with most mathematicians that proofs are essential for genui
没给大家介绍正文之前先给大家补充点知识：
js笛卡尔积算法
根据给的对象或者数组生成笛卡尔积
//笛卡儿积组合
function descartes(list)
{
//parent上一级索引;count指针计数
var point = {};
var result = [];
var pIndex = null;
var tempCount = 0;
var temp = [];
//根据参数列生成指针对象
for(var index in list)
{
if(typeof list[i
