[GitHub] [beam] sirenbyte commented on a diff in pull request #23577: [Tour of Beam] Learning content for "Common-transforms" module

["sirenbyte (via GitHub)" <gi...@apache.org>]

sirenbyte commented on code in PR #23577:
URL: https://github.com/apache/beam/pull/23577#discussion_r1116005987


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learning/tour-of-beam/learning-content/common-transforms/aggregation/count/description.md:
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@@ -0,0 +1,311 @@
+<!--
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+# Count
+
+`Count` provides many transformations for calculating the count of values in a `PCollection`, either globally or for each key.
+
+{{if (eq .Sdk "go")}}
+Counts the number of elements within each aggregation. The Count transform has two varieties:
+
+You can count the number of elements in ```PCollection``` with ```CountElms()```, it will return one element.

Review Comment:
   Done 



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