1. 1. Clap
2. 1. 1.1. Clap - Command Line Argument Parser
   2. 1.2. Clap Single positional argument
   3. 1.3. Clap Several positional arguments
   4. 1.4. Clap Single long argument
   5. 1.5. Clap Short arguments
   6. 1.6. Clap accepting string, number, bool - default values
   7. 1.7. Clap add help to each argument
   8. 1.8. Clap show the version number from Cargo.toml
   9. 1.9. Clap Show the description of the crates using the about command
   10. 1.10. Clap Show the description written in the code
   11. 1.11. Clap show generated description
   12. 1.12. Clap validate number range
   13. 1.13. Clap subcommands
   14. 1.14. Clap mutually exclusive
   15. 1.15. Clap mutually exclusive with group
   16. 1.16. Clap example for CLI
   17. 1.17. Clap: improving the help with value_name
   18. 1.18. Clap: one of a fixed list of values (enumerated)
   19. 1.19. Clap and environment variables
   20. 1.20. Clap - set default value if other flag provided
   21. 1.21. Clap - set default value if other argument provided
   22. 1.22. Clap - set default value based on another flag
   23. 1.23. Clap complete enum - name of shell
   24. 1.24. Repeat the same argument several times
   25. 1.25. Limit the number of values for a vector argument
   26. 1.26. Clap: fixed list of valid values for generic type
   27. 1.27. Clap: arbitraty function to validate argument
   28. 1.28. Clap: default value only if the flag was provides
   29. 1.29. Exercise: implement accepting the parameters of wc
   30. 1.30. Solution: implement accepting the parameters of wc