fibonacci-example

Fibonacci Examples

In these examples a fibonacci calculator is created using nools.

• fibonacci-dsl-example
• fibonacci-programmatic-example

Both of the examples declare the same set of rules.

1. Recurse - This rule creates a Fibonacci instance for each number up to the calculated value (e.g. 1,2,3,4,5,6,7,8,9,10)
2. Bootstrap - This rule looks for any Fibonacci instance that have a value equal to -1 and a sequence of 1 or 2 and sets it to 1.
3. Calculate - This rule looks for the subsequent Fibonacci instances (f1, f2, f3) with f3 not being calculated. This rule will used the values of f1 and f2 added together to calculate the value of f3.

For example given the number 5 to calculate the rules will fire in this order.

Recurse f1: Fibonacci { sequence: 5, value: -1 } } // asserts Fibonacci { sequence: 4, value: -1 }
Recurse f1: Fibonacci { sequence: 4, value: -1 } } // asserts Fibonacci { sequence: 3, value: -1 }
Recurse f1: Fibonacci { sequence: 3, value: -1 } } // asserts Fibonacci { sequence: 2, value: -1 }
Recurse f1: Fibonacci { sequence: 2, value: -1 } } // asserts Fibonacci { sequence: 1, value: -1 }
Bootstrap f: Fibonacci { sequence: 1, value: -1 } } // modifies f.value = 1
Bootstrap f: Fibonacci { sequence: 2, value: -1 } } // modifies f.value = 1
Calculate // modifies f3 by setting the value to 2
  f1: Fibonacci { sequence: 1, value: 1 },
  f2: Fibonacci { sequence: 2, value: 1 },
  f3: Fibonacci { sequence: 3, value: -1 },
Calculate // modifies f3 by setting the value to 3
  f1: Fibonacci { sequence: 2, value: 1 },
  f2: Fibonacci { sequence: 3, value: 2 },
  f3: Fibonacci { sequence: 4, value: -1 }
Calculate // modifies f3 by setting the value to 5
  f1: Fibonacci { sequence: 3, value: 2 },
  f2: Fibonacci { sequence: 4, value: 3 },
  f3: Fibonacci { sequence: 5, value: -1 }

fibonacci-dsl-example

To run this example run the following command in the root of the project.

npm run fibonacci:fibonacci-dsl-example [number=10]

Expected Output:

fibonacci-dsl-example: Example 1 - [number=10] [result=55]

fibonacci-programmatic-example

npm run fibonacci:fibonacci-programmatic-example [number=10]

Expected Output:

fibonacci-programmatic-example: Example 1 - [number=10] [result=55]