code: function extractBoolFromArray(array, startOrEndBln) {
          var extractedValue = extractFromArrayAt(
              array,
              startOrEndBln ? 0 : array.length - 1,
              _Boolean,
              false
          )[0];
          return isBoolean(extractedValue) ? extractedValue : false;
      }
docs: Extracts a boolean from the beginning or ending of an array depending on startOrEndBln.
  @note Method does not create a new array when doing extraction and alters originally passed in array.
  @param array {Array}
  @param startOrEndBln {Boolean}
  @returns {Boolean}