pub fn english() -> &'static HashMap<char, f64>Expand description
Returns the frequencies of each letter of the English alphabet as a map between
characters and percentage of words they appear in. The returned map will include both
lowercase and uppercase characters, with the lowercase and uppercase variant of each
letter having the same frequency value. To get a specific subset, use Frequency::english_lowercase()
or Frequency::english_uppercase().
§Performance
This is O(1).
§Returns
A map of letters and their frequencies.