Codermetrics

Name

D-Impact

Synopsis

Purpose

Provide a single “Defensive Impact” number that summarizes the contributions of a coder in helping to avoid large problems.

Formula

D-Impact = (Saves + Tackles) × Range

Example

Coder A completes the following assigned tasks in two development iterations:

Iteration 1: Task 1 working on Product Area A

Iteration 1: Task 2 working on Product Areas A, B

Iteration 1: Task 3 working on Product Area C, also credited with Save

Iteration 2: Task 4 working on Product Area B

Iteration 2: Task 5 working on Product Areas B, D

Iteration 2: Task 6 working on Product Area B, also credited with Plus

Iteration 2: Task 7 working on Product Area D

Among those Tasks, Task 3 fixes a production issue with the highest severity.

Also, while working on Task 6, the coder is credited with a Plus for taking initiative to create a scheduled clean-up routine that will avoid overconsumption of disk space in the future.

Using this information, you can calculate the coder’s D-Impact for each iteration and the Average across iterations in the following way:

Saves Iteration 1 = 1

Tackles Iteration 1 = 0

Range Iteration 1 = Count (Area A, Area B, Area C) = 3

D-Impact Iteration 1 = (1 + 0) × 3 = 3

Saves Iteration 2 = 0

Tackles Iteration 2 = 1

Range Iteration 2 = Count (Area B, Area D) = 2

D-Impact Iteration 2 = (0 + 1) × 2 = 2

Average D-Impact per iteration = (3 + 2) / 2 = 2.5

To calculate the Total D-Impact, you will need to determine the Total Range, which as discussed before, is not merely the sum of Range values ...