What are two literary devices used in Jane Austen's Sense and Sensibility?

One literary device Jane Austen uses in Sense
and Sensibility is didacticism. The didactic
novel was a popular form in the 1790s, which compared two ideologies and preached that
one was right and one was wrong. In the case of Sense and
Sensibility, Austen used didacticism to preach that the emotionally
uncontrolled perspective taught by the Romantic movement is the wrong way to live your
life, while governing your emotions through prudence and rational thought is the correct
way.

Austen's classic use of irony can also be found in
Sense and Sensibility. For instance, Dramatic
Irony can be seen in Marianne's claim that love can only happen once. We
see this claim of Marianne's made when Colonel Brandon asks Elinor if "her sister...does
not believe in second attachments" (Ch. 11). Later during the story Marianne's
perspective comes back to haunt her when, not only does Colonel Brandon fall in love
with her after being brokenhearted, but Marianne falls in love with Colonel Brandon even
after having her heart broken by Willoughby.