add todo

README.md

@@ -33,7 +33,7 @@
 
 - this repo serves two purposes for programmers considering nim as their Nth language:
   - [primary: source code](/src/bookofnim.nim) you can execute while reading
-    - generally concise examples of nims API interface
+    - generally concise examples of nims syntax
   - [secondary: documentation](https://noahehall.github.io/nim/htmldocs/bookofnim.html) you can read while coding
     - generally concise abbreviations extracted from nim docs/blogs/etc & categorized with links to technical specs
 - thus each _chapter_ consists of docs to read and code to run:

src/bookofnim/helloworld/modules/ifWhenCase.nim

@@ -13,7 +13,9 @@ branching todos
 ---------------
 - [likely](https://nim-lang.org/docs/system.html#likely.t%2Cbool)
 - [unlikely](https://nim-lang.org/docs/system.html#unlikely.t%2Cbool)
-
+- an example of using when (and if?) inside an object constructor
+  - there are examples in the doc where when is used to optionally define props
+  - e.g. this file: https://github.com/nim-lang/Nim/blob/devel/lib/std/private/threadtypes.nim
 ## when
 - a compile time if statement
 - the condition MUST be a constant expression