2021-02-08 10:53:18 +08:00
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# dedup
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2021-03-05 20:13:41 +08:00
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Eliminating duplicate copies of repeating vectors.
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2021-02-08 10:53:18 +08:00
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**Since:** 2.3
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## Parameters
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- `lt` : A list of vectors.
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- `eq` : A equality function. If it's ignored, use `==` to compare elements. **Since: ** 3.0
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2021-03-05 20:11:14 +08:00
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- `hash` : A hash function. If it's ignored, convert each element to a string and hash it. **Since: ** 3.0
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2021-03-06 18:16:21 +08:00
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- `number_of_buckets` : The function uses a hash table internally. Change the number of buckets if you're trying to do optimization. **Since: ** 3.0
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2021-02-08 10:53:18 +08:00
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## Examples
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eq = function(e1, e2) e1[0] == e2[0] && e1[1] == e2[1] && e1[2] == e2[2];
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points = [[1, 1, 2], [3, 4, 2], [7, 2, 2], [3, 4, 2], [1, 2, 3]];
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assert(
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dedup([[1, 1, 2], [3, 4, 2], [7, 2, 2], [3, 4, 2], [1, 2, 3]])
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== [[1, 1, 2], [3, 4, 2], [7, 2, 2], [1, 2, 3]]
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);
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assert(
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dedup([[1, 1, 2], [3, 4, 2], [7, 2, 2], [3, 4, 2], [1, 2, 3]], eq = eq)
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== [[1, 1, 2], [3, 4, 2], [7, 2, 2], [1, 2, 3]]
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);
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