jkndrkn / bball

Dev Setup¶ ↑

# Ensure ruby 2.0.0 is available to this project

bundle install
be rake db:create
be rake db:migrate
be rake db:seed
bundle exec rails server

# Browse to http://localhost:3000

Assumptions¶ ↑

1. If a player lacks an entry for a particular statistic, such as hits, the value of that statistic is set to zero.

2. If deriving a statistic requires division by zero, the value of that derived statistic is nil.

TODO¶ ↑

1. Add support for dataTables UI images (sort arrows, etc.).

2. Add tests.

Statistics Formulas¶ ↑

Source: Wikipedia

AVG: batting_average
HR: home_runs
SB: steals
RBI: rbi
RUNS: runs
OPS: on_base_plus_slugging

batting_average = hits / at_bats
on_base_plus_slugging = on_base_percentage + slugging_average
slugging_average = total_bases / at_bats
total_bases = 1 * (hits) + 2 * (doubles) + 3 * (triples) + 4 * (home_runs)
on_base_percentage = (hits + walks + hit_by_pitch) / (at_bats + walks + sacrifice_hits + hit_by_pitch)

Time to Completion¶ ↑

Coding¶ ↑

3 hours 20 minutes

Packaging deliverables and deploying¶ ↑

1 hour 45 minutes (mostly learning how to use heroku and postgresql)

Total¶ ↑

5 hours 5 minutes