2_parsing_cli.md

2 - Parsing CLI arguments

Task

Your application is supposed to parse CLI arguments.

• support toggle --exclamation which adds ! after the greeting, and name the last parameter
• --help should print out a help message

Hints

Please use Scallop for this task:

• add a library dependency for scallop, "org.rogach" %%% "scallop" % "3.1.5"
• follow the example at https://github.com/scallop/scallop#quick-example

NB! We can use regular Scala library (e.g. scallop in this case). Normally in SBT, %% adds Scala version suffix (e.g. _2.11), whereas %%% adds also Scala Native Version (e.g. _0.3_2.11).

Run

To run the application one can just type:

> sbt 'app/run --exclamation World'

or just print help message using:

> sbt 'app/run --help'