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Simple dense bitmap index in Go with binary operators

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is it possible to support `not` operation? https://en.wikipedia.org/wiki/Bitwise_operation#NOT

enhancement

Hi, based on the [release v1.2.0](https://github.com/kelindar/bitmap/releases/tag/v1.2.0) i have tried to use bulk approach for `And` operation for 1 + 6 extra bitmaps. Usage: `index.And(bms[0], bms[1:]...)` I do understand that there...

Hi, I was testing different bitmap libraries (by the way as a replacement for hash map) The results i received for 8 `and` operations for `500k` entities where first bitmap...

When using multiple bitmaps as Bitmap.Or() parameters, the length of destination Bitmap will be same to the first bitmap, if first one is shorter than others, the result will be...

the syntax `var books := bitmap.Bitmap` in **Example Usage** should change to `var books bitmap.Bitmap`

That is, what is the reason of having a slice of uint64 instead of a slice of byte?

i'm intending to use this as a free-map for a filesystem. is there a reason there's no range function to find zeros? am i holding it wrong?

When i am using bitmap and as we set the bits in bitmap virtual memory shoots up (verified using pmap command) , but after clearing the bitmap using "bitmap.clear" virtual...

currently need to call `Grow` then ones, them remove items `>= n` Can we add a new method `OnesTo(n)` set `Ones` with a upper boundary? A impl: ```golang func (dst...