On nsTArrays, we have a Sort() method to order array elements based on an arbitrary comparator. There isn't, however, a Shuffle() or Randomize() method available that would have extreme utility value (e.g. for future anti-fingerprinting or other exposure of arrays where one would want to order randomly, or even to have a utility value for exposing a Shuffle() method to web devs...). I'd offer a patch myself but I'm apparently not familiar enough with how the templates work in nsTArrays or how to properly pass the array data back to the caller (a brief attempt at putting something in failed for a for me unknown reason; data was not re-ordered).
We'd take a patch for this, but one could also use std::random_shuffle or std::shuffle.
Priority: -- → P5
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