module

这一次，彻底掌握go mod

Semantic Import Versioning

go get;

1. exact the path;
2. clone the path to $GOPATH/src or $GOPATH/mod

go 基于 git 构建仓库

1. git clone address: package
2. tag: package version

version name;

v2.3.4: major:incompatiable minor: new feature; patch version: bug fix

伪版本: 不符合 v1.1.1格式； xxx—xxxxxxxxxxxxx

go.mod

1. module name: github地址;

2. require: 直接引用的包

   1. incompatiable: major>=2,但 path 不包含 …/vN
   2. indirect: 非直接依赖: current –> B–[direct]–>[C,D]; C, D indirect:
      1. B没有module管理，
      2. C,D 没有在B的 go.mod文件中

how to update major version

update

1. go get -u: update current module

go.sum

used for: 防止依赖包被篡改

format:

1
2

github.com/xxx/pkg1 v1.0.0 h1: hash256value 
github.com/xxx/pkg1 v1.0.0/go.mod  h1: hash256value 

what happen before write to go.sum file

1. hash the content and compare hash value list in sum.golang.org

what happen when another

first downl