[JohanMabille]

This PR is a refactoring of the assignment. It is now possible to pass an assign policy specifying the aliasing, broadcasting and parallel policies to be used for the assignment.

[codspeed]

Merging this PR will not alter performance

1 warning

⚠️ Unable to measure the execution of 1 benchmark

This benchmark measured no execution time, so its result is not comparable and counts as unchanged. This usually happens when the compiler removes the code under test.

Prevent compiler optimizations

See affected benchmarks

✅ 255 untouched benchmarks

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_{Comparing JohanMabille:assign (8c7bfa2) with master (5d75ad3)}