摘要:
CREATE TABLE t1(id INT PRIMARY KEY, c INT) ENGINE=Memory;CREATE TABLE t2(id INT PRIMARY KEY, c INT) ENGINE=InnoDB;INSERT INTO t1 VALUES(1,1),(2,2),(3, 阅读全文
摘要:
实践 1、 python s="abc" s+="34" # OK print(s) s[0]="k" # TypeError: 'str' object does not support item assignment golang s := "abc" s += "456" fmt.Printl 阅读全文
摘要:
Unique and non-unique indexes - IBM Documentation https://www.ibm.com/docs/en/ias?topic=indexes-unique-non-unique Unique and non-unique indexes Last U 阅读全文
摘要:
type LinkNode struct { Val int Next *LinkNode } e := &LinkNode{} f := e fmt.Println(" &e=", &e, " &f=", &f) fmt.Println(" &e.Next=", &e.Next, " &f.Nex 阅读全文
摘要:
Go 汇编详解 https://mp.weixin.qq.com/s?__biz=MzI1MzYzMjE0MQ==&mid=2247502457&idx=1&sn=9b754e6b17ade0d48694d089b6537092&chksm=e9d3019bdea4888df6dbde663632d 阅读全文
摘要:
08 | Once:一个简约而不简单的并发原语 https://time.geekbang.org/column/article/301113 type Once struct { done uint32} func (o *Once) Do(f func()) { if !atomic.Compa 阅读全文