update all dates

Author: BillWagner

docs/csharp/language-reference/builtin-types/built-in-types.md

@@ -1,7 +1,7 @@
 ---
 title: "Built-in types"
 description: "Learn C# built-in value and reference types"
-ms.date: 02/04/2025
+ms.date: 02/19/2025
 helpviewer_keywords:
   - "types [C#], built-in"
   - "built-in C# types"

docs/csharp/language-reference/operators/lambda-expressions.md

@@ -1,7 +1,7 @@
 ---
 title: "Lambda expressions - Lambda expressions and anonymous functions"
 description: C# lambda expressions that are used to create anonymous functions and expression bodied members.
-ms.date: 02/13/2025
+ms.date: 02/19/2025
 helpviewer_keywords:
   - "lambda expressions [C#]"
   - "outer variables [C#]"

docs/csharp/language-reference/operators/lambda-operator.md

@@ -1,7 +1,7 @@
 ---
 title: "The lambda operator - The `=>` operator is used to define a lambda expression"
 description: "The C# => operator defines lambda expressions and expression bodied members. Lambda expressions define a block of code used as data."
-ms.date: 02/13/2025
+ms.date: 02/19/2025
 f1_keywords: 
   - "=>_CSharpKeyword"
 helpviewer_keywords: 

docs/csharp/language-reference/operators/nameof.md

@@ -1,7 +1,7 @@
 ---
 title: "The nameof expression - evaluate the text name of a symbol"
 description: "The C# `nameof` expression produces the name of its operand. You use it whenever you need to use the name of a symbol as text"
-ms.date: 01/31/2025
+ms.date: 02/19/2025
 f1_keywords:
   - "nameof_CSharpKeyword"
   - "nameof"

docs/csharp/language-reference/operators/type-testing-and-cast.md

@@ -1,7 +1,7 @@
 ---
 title: "Type-testing operators and cast expressions test the runtime type of an object"
 description: "The `is` and `as` operators test the type of an object. The `typeof` keyword returns the type of a variable. Casts try to convert an object to a variable of a different type."
-ms.date: 11/28/2022
+ms.date: 02/19/2025
 author: pkulikov
 f1_keywords: 
   - "is_CSharpKeyword"

docs/csharp/language-reference/operators/user-defined-conversion-operators.md

@@ -1,7 +1,7 @@
 ---
 title: "User-defined explicit and implicit conversion operators - provide conversions to different types"
 description: "Learn how to define custom implicit and explicit type conversions in C#. The operators provide the functionality for casting an object to a new type."
-ms.date: 02/04/2025
+ms.date: 02/19/2025
 f1_keywords:
   - "explicit_CSharpKeyword"
   - "implicit_CSharpKeyword"

docs/csharp/whats-new/csharp-14.md

@@ -1,7 +1,7 @@
 ---
 title: What's new in C# 14
 description: Get an overview of the new features in C# 14. C# 14 ships with .NET 10.
-ms.date: 02/04/2025
+ms.date: 02/19/2025
 ms.topic: whats-new
 ---
 # What's new in C# 14