2019-08-14 13:41:16 +00:00
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********************************
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Solidity v0.6.0 Breaking Changes
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********************************
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This section highlights the main breaking changes introduced in Solidity
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version 0.6.0, along with the reasoning behind the changes and how to update
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affected code.
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For the full list check
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`the release changelog <https://github.com/ethereum/solidity/releases/tag/v0.6.0>`_.
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2019-08-13 14:43:25 +00:00
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Syntactic Only Changes
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======================
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This section lists purely syntactic changes that do not affect the behavior of existing code.
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* Conversions from external function types to ``address`` are now disallowed. Instead external
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function types have a member called ``address``, similar to the existing ``selector`` member.
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2019-09-04 15:45:12 +00:00
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* Conversions from ``address`` to ``address payable`` are now possible via ``payable(x)``, where
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``x`` must be of type ``address``.
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2019-08-13 14:43:25 +00:00
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2019-09-13 22:54:51 +00:00
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* Function ``push(value)`` for dynamic storage arrays do not return the new length anymore.
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2019-09-09 10:49:54 +00:00
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* New reserved keywords: ``virtual``.
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2019-08-14 13:41:16 +00:00
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Semantic Only Changes
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=====================
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This section lists the changes that are semantic-only, thus potentially
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hiding new and different behavior in existing code.
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Semantic and Syntactic Changes
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==============================
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This section highlights changes that affect syntax and semantics.
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2019-07-07 15:53:03 +00:00
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* The resulting type of an exponentiation is the type of the base. It used to be the smallest type
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that can hold both the type of the base and the type of the exponent, as with symmentric
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operations. Additionally, signed types are allowed for the base of the exponetation.
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2019-08-14 13:41:16 +00:00
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How to update your code
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=======================
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This section gives detailed instructions on how to update prior code for every breaking change.
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2019-08-15 11:57:04 +00:00
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* Change ``address(f)`` to ``f.address`` for ``f`` being of external function type.
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2019-08-14 13:41:16 +00:00
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2019-09-13 22:54:51 +00:00
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* Change ``uint length = array.push(value)`` to ``array.push(value);``. The new length can be
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accessed via ``array.length``.
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2019-09-02 15:25:59 +00:00
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New Features
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============
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* The :ref:`try/catch statement <try-catch>` allows you to react on failed external calls.
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2019-10-28 14:25:02 +00:00
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* Yul and Inline Assembly have a new statement called ``leave`` that exits the current function.
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2019-09-02 15:25:59 +00:00
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2019-08-14 13:41:16 +00:00
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Deprecated Elements
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===================
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This section lists changes that deprecate prior features or syntax.
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.. _interoperability_060:
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Interoperability With Older Contracts
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=====================================
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