Add include info to c-binding's struct

crystal-lang · Nov 14, 2024 · 5ec0b66 · 5ec0b66
1 parent 815d88c
commit 5ec0b66
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/docs/syntax_and_semantics/c_bindings/struct.md b/docs/syntax_and_semantics/c_bindings/struct.md
@@ -41,6 +41,24 @@ lib C
 end
 ```
 
+Structs that are defined inside a `lib` can be included as modules internally in other `lib` defined structs, for example:
+
+```crystal
+lib Lib
+  struct Foo
+    x : Int32
+    y : Int16
+  end
+
+  struct Bar
+    include Foo
+    z : Int8
+  end
+end
+
+Lib::Bar.new # => Lib::Bar(@x=0, @y=0, @z=0)
+```
+
 To create an instance of a struct use `new`:
 
 ```crystal