code: def startswith(s: "Stream[str]", word: str) -> "Stream[bool]":
      """Computes the boolean stream of a string starting with a specific value.
  
      Parameters
      ----------
      s : `Stream[str]`
          A string stream.
      word : str
          A word that a string value can start with.
  
      Returns
      -------
      `Stream[bool]`
          A boolean stream.
      """
      return s.apply(lambda x: x.startswith(word)).astype("bool")
  
file_path: tensortrade/tensortrade/feed/api/string/operations.py
imports: from tensortrade.feed.core.base import Stream
  from tensortrade.feed.api.string import String
label_desc: Use image node_id 6 for calling a global function with example usage: startswith(s, word) and returns: s