Converting Between Go Structs
When working with multiple structs, it is often necessary to convert data from one struct to another. In Go, this can be achieved through a technique called field embedding.
Consider the following code snippet:
<code class="go">type A struct { a int b string } type B struct { A // field embedding of A c string // more fields }</code>
In this example, struct B embeds struct A. This means that struct B contains all the fields of struct A in addition to its own fields.
To convert a value of type A to type B, you can simply assign the fields of A to those of B. For instance:
<code class="go">func main() { structA := A{a: 42, b: "foo"} // assign structA to the embedded A field of structB structB := B{A: structA} }</code>
Through field embedding, you can easily convert between structs, eliminating the need to manually copy fields or create conversion methods.
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