childprocess

https://github.com/enkessler/childprocess

Ruby

Cross-platform Ruby library for managing child processes.

Matrix#index

:call-seq:
  index(value, selector = :all) -> [row, column]
  index(selector = :all){ block } -> [row, column]
  index(selector = :all) -> an_enumerator

The index method is specialized to return the index as [row, column]
It also accepts an optional +selector+ argument, see #each for details.

  Matrix[ [1,2], [3,4] ].index(&:even?) # => [0, 1]
  Matrix[ [1,1], [1,1] ].index(1, :strict_lower) # => [1, 0]

Source | Google | Stack overflow

Edit

git clone [email protected]:enkessler/childprocess.git
cd childprocess
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Matrix-index-for-pr

# Commit to git

git add git commit -m "better docs for Matrix#index"

# Open pull request

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

hub fork

git push <your name> -your-name--update-docs-Matrix-index-for-pr

hub pull-request

# Celebrate!