How Can I Efficiently Discover Which Go Types Implement a Specific Interface?

Determining Interface Implementations in Go

Discovering which types implement a particular interface can be a challenge, especially within the vast Go standard library. While experience plays a role, there are methods to simplify the process.

One technique, demonstrated by the provided example, involves utilizing regular expressions. The command egrep -nr '^func (.*) ReadByte(' searches for occurrences of the ReadByte() method across all Go source files. This regex pattern ensures it captures only file lines that contain function definitions matching the ReadByte() interface.

Another valuable resource is the Go website's search functionality. It allows for specific searches, including case-sensitive queries, which can be beneficial when searching for interface method names. By utilizing these approaches, developers can effectively identify which types implement a desired interface, enhancing their understanding of the Go standard library and simplifying their coding efforts.

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