Working with Dagger

After executing the interpreter with the "dagger" command, you will be presented with the following:

    Dagger Version x.x.x.x.x
    Press Ctrl+c to Exit

    dagger> 

You can run lines of code by writing them after "dagger> "

    dagger> print "Hello World"
    Hello World

Polish Notation

Dagger uses Polish Notation in order to perform more complex mathematical operations. You can read more about it here.

Evaluating External Files

You can evaluate external files in two ways:

1. Run the interpreter with the name of the file:

    dagger hello.dgr
    Hello

2. Run the load function from inside the interpreter prompt:

    dagger> load "hello.dgr"
    Hello

Note:

In order for expressions to be evaluated in external files, they must be written inside parentheses:

    # This will not be evaluated:
    print "Hello World!" 

    # This will be evaluated:
    (print "Hello World!")