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@@ -58,6 +58,14 @@ as precisely as you want to GHC what exactly you're doing. Below the surface layer, there is a more low-level wrapper (`XArray`) around `orthotope` that defines a non-nested `Mixed`-style array type. +**Be aware**: `ox-arrays` attempts to preserve sharing as much as possible. +That is to say: if a function is able avoid copying array data and return an +array that references the original underlying `Vector`, it may do so. For +example, this means that if you convert a nested array to a list of arrays, all +returned arrays reference part of the original array without copying. This +makes `mtoList` fast, but also means that memory may be retained longer than +you might expect. + Here is a little taster of the API, to get a sense for the design: ```haskell |