jrmccluskey commented on a change in pull request #15057:
URL: https://github.com/apache/beam/pull/15057#discussion_r663110713
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File path: website/www/site/content/en/documentation/programming-guide.md
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@@ -716,11 +837,45 @@ static class ComputeWordLengthFn extends DoFn<String,
Integer> {
{{< code_sample "sdks/python/apache_beam/examples/snippets/snippets_test.py"
model_pardo_pardo >}}
{{< /highlight >}}
-{{< paragraph class="language-java" >}}
+{{< highlight go >}}
+{{< code_sample "sdks/go/examples/snippets/04transforms.go" model_pardo_pardo
>}}
+{{< /highlight >}}
+
+{{< paragraph class="language-go" >}}
+Simple DoFns can also be written as functions.
+{{< /paragraph >}}
+
+{{< highlight go >}}
+func ComputeWordLengthFn(word string, emit func(int)) { ... }
+
+func init() {
+ beam.RegisterFunction(ComputeWordLengthFn)
+}
+{{< /highlight >}}
+
+<span class="language-go" >
+
+> **Note:** Wether using a structural `DoFn` type or a functional `DoFn`, they
should be registered with
Review comment:
```suggestion
> **Note:** Whether using a structural `DoFn` type or a functional `DoFn`,
they should be registered with
```
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