extruding-hash provdes a data structure, based on a Hash of Arrays,
that provides a method or two to gather data together in what can be
considered bins. The Hash functionality provides these bins, while
the data values themselves are contained in Arrays, providing the
concept of columns.
The extruding-hash object has methods where if an added column (in
the form of a Hash) has any bins that the object does not already
contain, the bin will be added, populated with nil values for any
columns that had not had a value for that bin - see figure 1:
Init. State (extruding-hash object)
Bin Columns
--- -------
a1|b1 [ 1, 2, 3, 5 ]
a3|b3 [ 2, 3, 5, 8 ]
a4|b4 [ 3, 5, 8, 13 ]
New column (Hash) to be added, note second bin not in extruding-hash object already.
Bins Values
--- -------
a1|b1 21
a2|b2 34
a4|b4 55
End. State (extruding-hash object), after column introduced.
Bin Columns
--- -------
a1|b1 [ 1, 2, 3, 5, 21 ]
a2|b2 [ nil, nil, nil, nil, 34 ]
a3|b3 [ 2, 3, 5, 8, nil ]
a4|b4 [ 3, 5, 8, 13 55 ]
Figure 1
extruding-hash is licensed under the Creative Commons 3.0 License.
Details can be found in the file LICENSE.
License-file referencing and other doc. formatting taken from damiendallimore.
gem install extruding-hash
require 'extruding-hash'
data = ExtrudingHash.new.set_from_hash({ "a1|b1" => [ 1, 2, 3, 5 ],
"a3|b3" => [ 2, 3, 5, 8 ], "a4|b4" => [ 3, 5, 8, 13 ] })
data << { "a1|b1" => 21, "a2|b2" => 34, "a4|b4" => 55 }
data
=> {"a1|b1"=>[1, 2, 3, 5, 21], "a2|b2"=>[nil, nil, nil, nil, 34],
"a3|b3"=>[2, 3, 5, 8, nil], "a4|b4"=>[ 3, 5, 8, 13, 55]}Please fork the GitHub project (https://github.com/aburnheimer/extruding-hash), make any changes, commit and push to GitHub, and submit a pull request. Including tests for your changes would be greatly appreciated!
This project was initiated by Andrew Burnheimer.
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- @aburnheimer
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