Add `MultiIndex` to LNodes and remove `FlattenedArray`

FEniCS / ffcx

Next generation FEniCS Form Compiler for finite element forms

https://fenicsproject.org

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Add `MultiIndex` to LNodes and remove `FlattenedArray` #610

Closed chrisrichardson closed 1 year ago

chrisrichardson commented 1 year ago

Adds a new MultiIndex class to LNodes, which is more flexible than the previous FlattenedArray and will offer similar functionality.

Can combine multi-indices together with union, intersection and difference - for tensor manipulations

coveralls commented 1 year ago

coverage: 79.317% (-0.6%) from 79.883% when pulling f1094b2b025e636e181541310362b67689cc39bd on chris/lnode-cleanup into de8487984786151bdf1146facccb04f10d641ad6 on main.