问题小集锦

什么是哈希，什么是散列

https://blog.youkuaiyun.com/asdzheng/article/details/70226007

utf-8和utf-8 without BOM

这两篇虽然讲的也不是很易懂，但是能大概让人知道反正一般用without BOM

https://blog.youkuaiyun.com/xiangbq/article/details/51919219

https://blog.youkuaiyun.com/wangnan537/article/details/45222653