as.text.table           Convert a data.table column of character
                        vectors into a column with one row per word
                        grouped by a grouping column. Optionally will
                        split a column of strings into vectors of
                        constituents.
flag_words              Flag rows in a text.table with specific words
l_pos                   Parts of speech for English words from the Moby
                        Project.
label_parts_of_speech   Add a column with the parts of speech for each
                        word in a text.table
ngrams                  Create n-grams
pos                     Parts of speech for English words from the Moby
                        Project.
regex_paragraph         Regular expression that might be used to split
                        strings of text into component paragraphs.
regex_sentence          Regular expression that might be used to split
                        strings of text into component sentences.
regex_word              Regular expression that might be used to split
                        strings of text into component words.
rm_frequent_words       Delete rows in a text.table where the number of
                        identical records within a group is more than a
                        certain threshold
rm_infrequent_words     Delete rows in a text.table where the number of
                        identical records within a group is less than a
                        certain threshold
rm_long_words           Delete rows in a text.table where the word has
                        more than a minimum number of characters
rm_no_overlap           Delete rows in a text.table where the records
                        within a group are not also found in other
                        groups (overlapping records)
rm_overlap              Delete rows in a text.table where the records
                        within a group are also found in other groups
                        (overlapping records)
rm_parts_of_speech      Delete rows in a text.table where the word has
                        a certain part of speech
rm_regexp_match         Delete rows in a text.table where the record
                        has a certain pattern indicated by a regular
                        expression
rm_short_words          Delete rows in a text.table where the word has
                        less than a minimum number of characters
rm_words                Remove rows from a text.table with specific
                        words
sampleStr               Generates (pseudo)random strings of the
                        specified char length
stopwords               Vector of lowercase English stop words.
str_any_match           Detect if there are any words in a vector also
                        found in another vector.
str_count_intersect     Count the intersecting words in a vector that
                        are found in another vector (only counts unique
                        words).
str_count_jaccard_similarity
                        Calculates the intersect divided by union of
                        two vectors of words.
str_count_match         Count the words in a vector that are found in
                        another vector.
str_count_nomatch       Count the words in a vector that are not found
                        in another vector.
str_count_positional_match
                        Count words from a vector that are found in the
                        same position in another vector.
str_count_positional_nomatch
                        Count words from a vector that are not found in
                        the same position in another vector.
str_count_setdiff       Count the words in a vector that don't
                        intersect with another vector (only counts
                        unique words).
str_counts              Create a list of a vector of unique words found
                        in x and a vector of the counts of each word in
                        x.
str_dt_col_combine      Combine columns of a data.table into a list in
                        a new column, wraps list(unlist(c(...)))
str_extract_match       Extract words from a vector that are found in
                        another vector.
str_extract_nomatch     Extract words from a vector that are not found
                        in another vector.
str_extract_positional_match
                        Extract words from a vector that are found in
                        the same position in another vector.
str_extract_positional_nomatch
                        Extract words from a vector that are not found
                        in the same position in another vector.
str_rm_blank_space      Remove and replace excess white space from
                        strings.
str_rm_long_words       Remove words from a vector that have more than
                        a maximum number of characters.
str_rm_non_alphanumeric
                        Remove and replace non-alphanumeric characters
                        from strings.
str_rm_non_printable    Remove and replace non-printable characters
                        from strings.
str_rm_numbers          Remove and replace numbers from strings.
str_rm_punctuation      Remove and replace punctuation from strings.
str_rm_regexp_match     Remove words from a vector that match a regular
                        expression.
str_rm_short_words      Remove words from a vector that don't have a
                        minimum number of characters.
str_rm_words            Remove words from a vector of words found in
                        another vector of words.
str_rm_words_by_length
                        Remove words from a vector based on the number
                        of characters in each word.
str_stopwords_by_part_of_speech
                        Create a vector of English words associated
                        with particular parts of speech.
str_tolower             Calls base::tolower(), which converts letters
                        to lowercase. Only included to point out that
                        base::tolower exists and should be used
                        directly.
str_weighted_count_match
                        Weighted count of the words in a vector that
                        are found in another vector.
