Merge pull request #68 from messerli-informatik-ag/index-initializers

Index initializers

Author: Christian-Ochsner

documentation/src/SUMMARY.md

@@ -18,3 +18,4 @@
 * [Miscellaneous](./miscellaneous.md)
 * [Comments](./comments.md)
 * [Commit Message](./commit-messages.md)
+* [Object Initializer](./object-initializer.md)

documentation/src/object-initializer.md

@@ -0,0 +1,34 @@
+# Initializer
+
+## Index Initializers
+
+Use index initializers with dictionary.
+This elegantly prevents uninitialized dictionaries.
+See [Object and Collection Initializers (C# Programming Guide)].
+
+[Object and Collection Initializers (C# Programming Guide)]: https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/object-and-collection-initializers#object-initializers-with-collection-read-only-property-initialization
+
+```csharp
+var dict = new Dictionary<string, int>
+{
+    ["key1"] = 1,
+    ["key2"] = 50,
+};
+```
+*Good example*
+
+```csharp
+var dict = new Dictionary<string, int>();
+dict["key1"] = 1;
+dict["key2"] = 50;
+```
+*Not so good example*
+
+```csharp
+var dict = new Dictionary<string, int>
+{
+    { "key1", 1 },
+    { "key2", 50 },
+};
+```
+*Deprecated way example*