TUTORIAL.md

Project 1 - return an error code

1. Create a file named first.bts

2. Type in:

exit 3

3. Compile and run:

bts run first.bts

4. Check that the exit code was indeed 3:

echo $?

Project 2 - hello world

1. Create a file named hello.bts

2. Type in:

const hi = "Hello, World!", 10
write(hi)

3. Compile and run:

bts run hello.bts

4. The output should be:

"Hello, World!"

Project 3 - compile, run and clean

1. Compile hello.bts from project 2:

bts build hello.bts

2. Observe that the resulting executable is tiny:

bts size hello.bts

3. Run it:

./hello

4. Clean up by removing all the generated files:

bts clean

Project 4 - run as a script

1. Add this at the top of hello.bts:

#!/usr/bin/bts

2. Make it executable:

chmod +x hello.bts

3. Run it as a script:

./hello.bts

Project 5 - loop

1. Create loop.bts
2. Type in:

const hi = "Hello there", 10

fun main
  loop 7
    print(hi)
  end
end

"Hello there", 10 is the same as "Hello there\n" since '\n' has ASCII value 10.