| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/stoewer/go-strcase | Package strcase converts between different kinds of naming formats such as camel case (CamelCase), snake case (snake_case) or kebab case (kebab-case). |
| regexp | Package regexp implements regular expression search. |
| sort | Package sort provides primitives for sorting slices and user-defined collections. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |