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Add default value details

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Chris Ward 2018-11-23 10:16:30 +01:00
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docs/types.rst
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@ -13,7 +13,10 @@ Solidity provides several elementary types which can be combined to form complex
In addition, types can interact with each other in expressions containing
operators. For a quick reference of the various operators, see :ref:`order`.
The concept of "undefined" or "null" values do not exist in Solidity. To handle any unexpected values, you should use the :ref:`revert function<assert-and-require>` to revert the whole transaction, or return a tuple with a second `bool` value denoting success.
The concept of "undefined" or "null" values do not exist in Solidity, but newly
declared variables always have a :ref:`default value<default-value>` dependent
on its type. To handle any unexpected values, you should use the :ref:`revert function<assert-and-require>` to revert the whole transaction, or return a
tuple with a second `bool` value denoting success.
.. index:: ! value type, ! type;value