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| -rw-r--r-- | doc/astspec.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/astspec.txt b/doc/astspec.txt index c41aee96f..019b735f5 100644 --- a/doc/astspec.txt +++ b/doc/astspec.txt @@ -1392,6 +1392,17 @@ Macro declaration Macros behave like templates, but ``nnkTemplateDef`` is replaced with ``nnkMacroDef``. +Hidden Standard Conversion +-------------------------- + +.. code-block:: nim + var f: float = 1 + +The type of "f" is ``float`` but the type of "1" is actually ``int``. Inserting +``int`` into a ``float`` is a type error. Nim inserts the ``nnkHiddenStdConv`` +node around the ``nnkIntLit`` node so that the new node has the correct type of +``float``. This works for any auto converted nodes and makes the conversion +explicit. Special node kinds ================== |