What are some examples of type inference in programming languages?

What are some examples of type inference in programming languages?

Type inference is a feature in some programming languages where the compiler can deduce the type of a variable automatically. Examples include languages like Haskell, Scala, and TypeScript.

Can you explain how type inference works in TypeScript?

In TypeScript, type inference occurs when you declare a variable without explicitly specifying its type. The TypeScript compiler analyzes the assigned value and infers the type based on that.

Are there any downsides to using type inference?

Yes, while type inference can make code cleaner and easier to read, it can also lead to less explicit types, which may cause confusion or bugs if the inferred type is not what the developer intended.

Which languages have the best type inference systems?

Languages like Haskell and Scala are often praised for their powerful type inference systems, as they can infer complex types with high accuracy.