From c1214c4f0143922f19fd378bd35d1014e10eeb02 Mon Sep 17 00:00:00 2001
From: Reiley Yang <reyang@microsoft.com>
Date: Thu, 18 Apr 2024 20:12:53 -0700
Subject: [PATCH] Remove predicate based View examples

---
 docs/metrics/customizing-the-sdk/Program.cs | 12 ----
 docs/metrics/customizing-the-sdk/README.md  | 73 ---------------------
 2 files changed, 85 deletions(-)

diff --git a/docs/metrics/customizing-the-sdk/Program.cs b/docs/metrics/customizing-the-sdk/Program.cs
index 48c9a975311..c88a295fdd7 100644
--- a/docs/metrics/customizing-the-sdk/Program.cs
+++ b/docs/metrics/customizing-the-sdk/Program.cs
@@ -40,18 +40,6 @@ public static void Main()
             // Drop the instrument "MyCounterDrop".
             .AddView(instrumentName: "MyCounterDrop", MetricStreamConfiguration.Drop)
 
-            // Advanced selection criteria and config via Func<Instrument, MetricStreamConfiguration>
-            .AddView((instrument) =>
-            {
-                if (instrument.Meter.Name.Equals("CompanyA.ProductB.Library2") &&
-                    instrument.GetType().Name.Contains("Histogram"))
-                {
-                    return new ExplicitBucketHistogramConfiguration() { Boundaries = new double[] { 10, 20 } };
-                }
-
-                return null;
-            })
-
             // An instrument which does not match any views
             // gets processed with default behavior. (SDK default)
             // Uncommenting the following line will
diff --git a/docs/metrics/customizing-the-sdk/README.md b/docs/metrics/customizing-the-sdk/README.md
index 4541e1a4ccc..aceff88d8fb 100644
--- a/docs/metrics/customizing-the-sdk/README.md
+++ b/docs/metrics/customizing-the-sdk/README.md
@@ -136,20 +136,6 @@ own the instrument to create it with a different name.
     .AddView(instrumentName: "MyCounter", name: "MyCounterRenamed")
 ```
 
-```csharp
-    // Advanced selection criteria and config via Func<Instrument, MetricStreamConfiguration>
-    .AddView((instrument) =>
-    {
-        if (instrument.Meter.Name == "CompanyA.ProductB.LibraryC" &&
-            instrument.Name == "MyCounter")
-        {
-            return new MetricStreamConfiguration() { Name = "MyCounterRenamed" };
-        }
-
-        return null;
-    })
-```
-
 #### Drop an instrument
 
 When using `AddMeter` to add a Meter to the provider, all the instruments from
@@ -162,20 +148,6 @@ then it is recommended to simply not add that `Meter` using `AddMeter`.
     .AddView(instrumentName: "MyCounterDrop", MetricStreamConfiguration.Drop)
 ```
 
-```csharp
-    // Advanced selection criteria and config via Func<Instrument, MetricStreamConfiguration>
-    .AddView((instrument) =>
-    {
-        if (instrument.Meter.Name == "CompanyA.ProductB.LibraryC" &&
-            instrument.Name == "MyCounterDrop")
-        {
-            return MetricStreamConfiguration.Drop;
-        }
-
-        return null;
-    })
-```
-
 #### Select specific tags
 
 When recording a measurement from an instrument, all the tags that were provided
@@ -219,23 +191,6 @@ with the metric are of interest to you.
     ...
 ```
 
-```csharp
-    // Advanced selection criteria and config via Func<Instrument, MetricStreamConfiguration>
-    .AddView((instrument) =>
-    {
-        if (instrument.Meter.Name == "CompanyA.ProductB.LibraryC" &&
-            instrument.Name == "MyFruitCounter")
-        {
-            return new MetricStreamConfiguration
-            {
-                TagKeys = new string[] { "name" },
-            };
-        }
-
-        return null;
-    })
-```
-
 #### Configuring the aggregation of a Histogram
 
 There are two types of
@@ -274,24 +229,6 @@ default boundaries. This requires the use of
         new ExplicitBucketHistogramConfiguration { Boundaries = Array.Empty<double>() })
 ```
 
-```csharp
-    // Advanced selection criteria and config via Func<Instrument, MetricStreamConfiguration>
-    .AddView((instrument) =>
-    {
-        if (instrument.Meter.Name == "CompanyA.ProductB.LibraryC" &&
-            instrument.Name == "MyHistogram")
-        {
-            // `ExplicitBucketHistogramConfiguration` is a child class of `MetricStreamConfiguration`
-            return new ExplicitBucketHistogramConfiguration
-            {
-                Boundaries = new double[] { 10, 20 },
-            };
-        }
-
-        return null;
-    })
-```
-
 ##### Base2 exponential bucket histogram aggregation
 
 By default, a Histogram is configured to use the
@@ -313,16 +250,6 @@ within the maximum number of buckets defined by `MaxSize`. The default
         new Base2ExponentialBucketHistogramConfiguration { MaxSize = 40 })
 ```
 
-```csharp
-    // Configure all histogram instruments to use the Base2 Exponential Histogram aggregation
-    .AddView((instrument) =>
-    {
-        return instrument.GetType().GetGenericTypeDefinition() == typeof(Histogram<>)
-            ? new Base2ExponentialBucketHistogramConfiguration()
-            : null;
-    })
-```
-
 > [!NOTE]
 > The SDK currently does not support any changes to `Aggregation` type
 by using Views.