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Update functions.rst

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@ -317,12 +317,13 @@ will consume more gas than the 2300 gas stipend:
- Sending Ether - Sending Ether
.. warning:: .. warning::
Contracts that receive Ether directly (without a function call, i.e. using ``send`` or ``transfer``) When Ether is sent directly to a contract (without a function call, i.e. sender uses ``send`` or ``transfer``)
but do not define a receive Ether function or a payable fallback function but the receiving contract does not define a receive Ether function or a payable fallback function,
throw an exception, sending back the Ether (this was different an exception will be thrown, sending back the Ether (this was different
before Solidity v0.4.0). So if you want your contract to receive Ether, before Solidity v0.4.0). If you want your contract to receive Ether,
you have to implement a receive Ether function (using payable fallback functions for receiving Ether is you have to implement a receive Ether function (using payable fallback functions for receiving Ether is
not recommended, since it would not fail on interface confusions). not recommended, since the fallback is invoked and would not fail for interface confusions
on the part of the sender).
.. warning:: .. warning::