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openzeppelin-contracts/contracts/token/ERC777
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Aram Elchyan 5d34dbecea Functions in SafeMath contract overloaded to accept custom error messages (#1828) 
* Imporvement: functions in SafeMath contract overloaded to accept custom error messages.

* CHANGELOG updated, custom error messages added to ERC20, ERC721 and ERC777 for subtraction related exceptions.

* SafeMath overloads for 'add' and 'mul' removed.

* Error messages modified.

* Update CHANGELOG.md
2019-07-29 15:23:34 -03:00
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ERC777.sol
Functions in SafeMath contract overloaded to accept custom error messages (#1828)
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IERC777.sol
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IERC777Recipient.sol
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IERC777Sender.sol
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README.adoc
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README.adoc 

= ERC 777
This set of interfaces and contracts are all related to the [ERC777 token standard](https://eips.ethereum.org/EIPS/eip-777).

TIP: For an overview of ERC777 tokens and a walkthrough on how to create a token contract read our xref:ROOT:tokens.adoc#ERC777[ERC777 guide].

The token behavior itself is implemented in the core contracts: {IERC777}, {ERC777}.

Additionally there are interfaces used to develop contracts that react to token movements: {IERC777Sender}, {IERC777Recipient}.

== Core

{{IERC777}}

{{ERC777}}

== Hooks

{{IERC777Sender}}

{{IERC777Recipient}}