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-rw-r--r--docs/abi-spec.rst8
1 files changed, 4 insertions, 4 deletions
diff --git a/docs/abi-spec.rst b/docs/abi-spec.rst
index 98301fdc..b0b16e28 100644
--- a/docs/abi-spec.rst
+++ b/docs/abi-spec.rst
@@ -77,7 +77,7 @@ of them inside parentheses, separated by commas:
- ``(T1,T2,...,Tn)``: tuple consisting of the types ``T1``, ..., ``Tn``, ``n >= 0``
-It is possible to form tuples of tuples, arrays of tuples and so on.
+It is possible to form tuples of tuples, arrays of tuples and so on. It is also possible to form zero-tuples (where ``n == 0``).
.. note::
Solidity supports all the types presented above with the same names with the exception of tuples. The ABI tuple type is utilised for encoding Solidity ``structs``.
@@ -117,7 +117,7 @@ on the type of ``X`` being
- ``(T1,...,Tk)`` for ``k >= 0`` and any types ``T1``, ..., ``Tk``
- ``enc(X) = head(X(1)) ... head(X(k-1)) tail(X(0)) ... tail(X(k-1))``
+ ``enc(X) = head(X(1)) ... head(X(k)) tail(X(1)) ... tail(X(k))``
where ``X(i)`` is the ``ith`` component of the value, and
``head`` and ``tail`` are defined for ``Ti`` being a static type as
@@ -126,7 +126,7 @@ on the type of ``X`` being
and as
- ``head(X(i)) = enc(len(head(X(0)) ... head(X(k-1)) tail(X(0)) ... tail(X(i-1))))``
+ ``head(X(i)) = enc(len( head(X(1)) ... head(X(k)) tail(X(1)) ... tail(X(i-1)) ))``
``tail(X(i)) = enc(X(i))``
otherwise, i.e. if ``Ti`` is a dynamic type.
@@ -137,7 +137,7 @@ on the type of ``X`` being
- ``T[k]`` for any ``T`` and ``k``:
- ``enc(X) = enc((X[0], ..., X[k-1]))``
+ ``enc(X) = enc((X[1], ..., X[k]))``
i.e. it is encoded as if it were a tuple with ``k`` elements
of the same type.