<commit_before>object BloomFilter {

}
<commit_msg>Draft API<commit_after>class BloomFilter[T](numberOfBits: Long, numberOfHashes: Int) {

  def add(x: T): Unit = {
  }

  def checkAndAdd(x: T): Boolean = {
    false
  }

  def mightContain(x: T): Boolean = {
    false
  }

  def expectedFalsePositiveRate(): Double = {
    0
  }

}

object BloomFilter {
  def apply[T](numberOfItems: Long, falsePositiveRate: Double): BloomFilter[T] = {
    val nb = optimalNumberOfBits(numberOfItems, falsePositiveRate)
    val nh = optimalNumberOfHashes(numberOfItems, nb)
    new BloomFilter[T](nb, nh)
  }

  def optimalNumberOfBits(numberOfItems: Long, falsePositiveRate: Double): Long = {
    math.ceil(-1 * numberOfItems * math.log(falsePositiveRate) / math.log(2) / math.log(2)).toLong
  }

  def optimalNumberOfHashes(numberOfItems: Long, numberOfBits: Long): Int = {
    math.ceil(numberOfBits / numberOfItems * math.log(2)).toInt
  }
}

{'fraction_non_alphanumeric': 0.1255364806866953, 'fraction_numerical': 0.00536480686695279, 'mean_word_length': 4.126373626373627, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '6119417', 'n_tokens_mistral': 333, 'n_tokens_neox': 319, 'n_words': 65}