- card China identify card utils
- container some data containers e.g. concurrent map, queue
- crypt encryption and decryption utils
- fs file system utils
- number some util funcs for number e.g. Format
- osinfo get os info for linux/darwin/windows
- slice some util funcs for slice(int/string) e.g. RemoveDuplicates, Diff
- strings some extension util funcs for string e.g. SubString, SubStr
- alg some common algrithms e.g. BFPRT