daru

https://github.com/sciruby/daru

Ruby

Data Analysis in RUby

Daru::Maths::Statistics::Vector#count

Retrieves number of cases which comply condition. If block given,
retrieves number of instances where block returns true. If other
values given, retrieves the frequency for this value. If no value
given, counts the number of non-nil elements in the Vector.

Source | Google | Stack overflow

Edit

git clone [email protected]:sciruby/daru.git

cd daru

open lib/daru/maths/statistics/vector.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Daru--Maths--Statistics--Vector-count-for-pr

# Commit to git

git add lib/daru/maths/statistics/vector.rbgit commit -m "better docs for Daru::Maths::Statistics::Vector#count"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Daru--Maths--Statistics--Vector-count-for-pr

hub pull-request

# Celebrate!