Understanding Go 1.21 Generics Type Inference

2023/08/09

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The article discusses the improvements in Go 1.21, specifically focusing on the better generic type inference. The author explains that prior to Go 1.21, passing a function as an argument to another function required explicit specification of type arguments, even if it was obvious from context. However, with the new release, the compiler can now infer the missing type arguments of the callee, making the code more concise and readable. The article provides examples to illustrate this improvement. Additionally, the article mentions that Go 1.21 also improves type inference for generic interface types, allowing type arguments to be inferred from the corresponding parameter types of matching methods. Overall, these improvements make working with generics in Go more intuitive and efficient. This article is relevant for developers who want to stay updated on the latest improvements in Go and learn how to leverage the new features in their code.