Scala Pertanyaan dan Jawaban Wawancara
Question: Explain the concept of covariance and contravariance in Scala.Answer: Covariance allows a type parameter to vary in the same direction as the container type, while contravariance allows it to vary in the opposite direction. They are denoted by + and - symbols, respectively. |
Simpan untuk Revisi
Bookmark item ini, tandai sebagai sulit, atau masukkan ke dalam set revisi.
Masuk untuk menyimpan bookmark, pertanyaan sulit, dan set revisi.
Apakah ini membantu? Ya Tidak
Most helpful rated by users:
- What is a higher-order function?
- Explain the \'yield\' keyword in Scala.
- Explain the difference between val and var in Scala.
- What is the purpose of the \'case\' keyword in Scala?
- What are the advantages of using the \'Option\' type over null in Scala?