# Questions
1 min read, 65 words questions
# Software production and constructs
- When should I use mixins and inheritance and composition? When does it matter?
- created both the runtime and type hierarchies separately, then merged them at the end @runtime
- in TS, mixins and type hierarcies are resolved using control flow analysis (opens new window)
- mixin vs inheriance (opens new window)
use Mixins to support multiple inheritance