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How Can I Print Dereferenced Values of Pointers in Go Structs for Effective Debugging?

Susan Sarandon
Susan SarandonOriginal
2024-11-06 08:43:021028browse

How Can I Print Dereferenced Values of Pointers in Go Structs for Effective Debugging?

Dereferencing Fields for Debugging

When printing a Go struct that contains pointers, the output typically displays memory addresses instead of the actual values. To improve debugging, it's desirable to print the dereferenced values.

Solution: Using the go-spew Package

The go-spew package provides a convenient solution. It can be used to dump a struct, including fields that are pointers, displaying the dereferenced values as well.

Example:

Consider the following Go struct:

In the main function, create an instance of SomeStruct and pass it to spew.Dump:

This will print the following output:

The desired dereferenced value ("I want to see what is in here") is now visible under the Field3 field. This allows for easy inspection of pointers in complex structs during debugging.

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