Intrusive Ruby Tools for the Console Only

By using by we create what one could call a compaignon collection which can be transformed, at the end we can use finders and filters on these compagnon collection to access the original data

Let us for example suppose that we have the following data

    let(:data) {
      (0..9).map{ |n|
        OpenStruct.new(id: n, name: "name #{n}", content: (0..n).map{ |k| "data #{k}" })
      }
    }

Now we can filter the original data by selecting on some transformations on the compagnon collection, firstly we create a compagnon collection which contains only the names:

  let(:compagnon){ data.by(:name) }

Now we can access the original for example as follows

    expect(compagnon.fnd("name 1")).to eq(data[1])

We can chain by as much as we want

    let(:children_count) { data.by(:content).by(:size) }

And select on children count

    expect(children_count.sel(:>, 8)).to eq(data[8..9])

Copyright © 2019,20 Robert Dober mailto: robert.dober@gmail.com

Same as Elixir -- ;) --, which is Apache License v2.0. Please refer to LICENSE for details.

SPDX-License-Identifier: Apache-2.0