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Merge pull request #3427 from duaraghav8/patch-3

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Abstract Contracts: Add note about function type
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chriseth 2018-02-21 18:04:35 +01:00 committed by GitHub
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docs/contracts.rst
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@ -1053,6 +1053,17 @@ but they can be used as base contracts::
If a contract inherits from an abstract contract and does not implement all non-implemented functions by overriding, it will itself be abstract.
Note that a function without implementation is different from a :ref:`Function Type <function_types>` even though their syntax looks very similar.
Example of function without implementation (a function declaration)::
function foo(address) external returns (address);
Example of a Function Type (a variable declaration, where the variable is of type ``function``)::
function(address) external returns (address) foo;
.. index:: ! contract;interface, ! interface contract
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