Câu hỏi phỏng vấn Kotlin
Câu hỏi

What are scope functions in Kotlin?

Câu trả lời

Scope functions in Kotlin are a set of functions that allow you to execute a block of code within the context of an object. They provide a concise way to perform operations on an object without repeating its name. There are five main scope functions in Kotlin:

  1. let: Executes a block of code on a non-null object and returns the lambda result. It is commonly used for safe execution with nullable objects and chaining multiple operations[1][3][4].

  2. run: Executes a block of code on an object and returns the lambda result. It can be used to operate on nullable objects and compute the result[1][3].

  3. with: Executes a block of code on an object and returns the lambda result. It is called without the context object and is useful for grouping function calls on an object[1][3][4].

  4. apply: Executes a block of code on an object and returns the context object. It is commonly used fo...

middle

middle

Gợi ý câu hỏi phỏng vấn

expert

Explain the difference between lateinit and lazy in details

middle

Explain the null safety in Kotlin

middle

When would you use Elvis operator in Kotlin?

Bình luận

Chưa có bình luận nào

Chưa có bình luận nào