Method CheckedRemove

roaring.go:1223–1239

CheckedRemove removes the integer x from the bitmap and return true if the integer was effectively removed (and false if the integer was not present)

(x uint32)

// CheckedRemove removes the integer x from the bitmap and return true if the integer was effectively removed (and false if the integer was not present)
func (rb *Bitmap) CheckedRemove(x uint32) bool {
	// TODO: add unit tests for this method
	hb := highbits(x)
	i := rb.highlowcontainer.getIndex(hb)
	if i >= 0 {
		C := rb.highlowcontainer.getWritableContainerAtIndex(i)
		oldcard := C.getCardinality()
		C = C.iremoveReturnMinimized(lowbits(x))
		rb.highlowcontainer.setContainerAtIndex(i, C)
		if rb.highlowcontainer.getContainerAtIndex(i).isEmpty() {
			rb.highlowcontainer.removeAtIndex(i)
			return true
		}
		return C.getCardinality() < oldcard
	}
	return false
}

// IsEmpty returns true if the Bitmap is empty (it is faster than doing (GetCardinality() == 0))
func (rb *Bitmap) IsEmpty() bool {