Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
jitl
on July 24, 2017
|
parent
|
context
|
favorite
| on:
What are covariance and contravariance?
Wow this explanation makes so much more sense! Thanks, Math Professor.
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search:
