Description text of `difference`

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Read the difference documentation linked in the issue and compare its wording with the provided example. Clarify that each element in the second array is matched and removed from the first array from left to right; done when the description explains why the result is [1].

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描述

Example:

difference [2, 1, 2] [2, 2, 3] == [1]

https://pursuit.purescript.org/packages/purescript-arrays/7.3.0/docs/Data.Array#v:difference

Delete the first occurrence of each element in the second array from the first array, creating a new array.

I read the description as follows:

  • each element in the second array: 2, 2, 3
  • first occurrence of each element in the second array: 2, 3
  • delete [2,3] from the first array: [2,1,2] ---> deleting [2,3] ---> [1,2]

This would be a clearer description of what this function does:

For each element in the second array, find an occurrence from left to right in the first array and remove it when found.

I think the word "first" should be avoided, because in the example above then second 2 from [2,2,3] is matched against the second 2 from [2,1,2].

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