What are some examples of type inference in programming?

What are some examples of type inference in programming?

Type inference is when a programming language automatically deduces the type of a variable. For example, in Python, if you write x = 10, Python infers that x is an integer.

Can you give me more examples in different languages?

Sure! In JavaScript, if you declare let name = 'Alice';, the engine infers that name is a string. In TypeScript, you can also use type inference with functions, like const add = (a, b) => a + b;, where the types of a and b are inferred.

What are the benefits of type inference?

Type inference can lead to cleaner code, as it reduces the need for explicit type declarations. It also helps catch errors at compile time, improving code safety.

Are there any languages that don't support type inference?

Yes, some languages like Java (prior to Java 10) require explicit type declarations. However, many modern languages are moving towards supporting type inference.