Function FromDense

roaring.go:105–116

FromDense creates a bitmap from a slice of uint64s representing the bitmap as a dense bitmap. Useful to convert bitmaps from libraries like https://github.com/bits-and-blooms/bitset or https://github.com/kelindar/bitmap into roaring bitmaps fast and with convenience. This function will not create a

(bitmap []uint64, doCopy bool)

//
// See also FromBitSet.
func FromDense(bitmap []uint64, doCopy bool) *Bitmap {
	sz := (len(bitmap) + bitmapContainerSize - 1) / bitmapContainerSize // round up
	rb := &Bitmap{
		highlowcontainer: roaringArray{
			containers:      make([]container, 0, sz),
			keys:            make([]uint16, 0, sz),
			needCopyOnWrite: make([]bool, 0, sz),
		},
	}
	rb.FromDense(bitmap, doCopy)
	return rb
}

// FromDense unmarshalls from a slice of uint64s representing the bitmap as a dense bitmap.
// Useful to convert bitmaps from libraries like https://github.com/bits-and-blooms/bitset or