Files · 5d34dbeceadd7cdb495d6c13822d27d239350099 · 俞永鹏 / openzeppelin-contracts-upgradeable

Functions in SafeMath contract overloaded to accept custom error messages (#1828) · 5d34dbec

* 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

authored Jul 29, 2019

5d34dbec

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README.md