snapshot of https://github.com/uber-go/guide.git (master, 2026-09-15; blobs > 131072B omitted)

src/interface-pointer.md

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+# Pointers to Interfaces
+
+You almost never need a pointer to an interface. You should be passing
+interfaces as values—the underlying data can still be a pointer.
+
+An interface is two fields:
+
+1. A pointer to some type-specific information. You can think of this as
+  "type."
+2. Data pointer. If the data stored is a pointer, it’s stored directly. If
+  the data stored is a value, then a pointer to the value is stored.
+
+If you want interface methods to modify the underlying data, you must use a
+pointer.