Some test and benchmark

Benchmark for understanding golang.

notice

If you use VSCODE for coding, you need to config your gopls in vscode's settings.json for support multi module file. Add code like below:

  "gopls": {
  "build.experimentalWorkspaceModule": true
  }

append & copy

Copy is more effective than append.

calcu md5 of a file

slice the file is more effective than read the whole file to memeroy.

rand seed

string to []byte

Use pointer is much more faster. 使用反射和指针性能提升十分明显

Memory escape

用使用指针一定比内存快？