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25 lines
1.2 KiB
ReStructuredText
25 lines
1.2 KiB
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********************************
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Solidity v0.7.0 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 0.7.0, 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/v0.7.0>`_.
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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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* Change ``f.value(...)()`` to ``f{value: ...}()``. Similarly ``(new C).value(...)()`` to
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``(new C){value: ...}()`` and ``f.gas(...)()`` to ``f{gas: ...}()``.
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* Change ``now`` to ``block.timestamp``.
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* Change types of right operand in shift operators to unsigned types. For example change ``x >> (256 - y)`` to
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``x >> uint(256 - y)``.
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* Repeat the ``using A for B`` statements in all derived contracts if needed.
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* Remove the ``public`` keyword from every constructor.
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* Remove the ``internal`` keyword from every constructor and add ``abstract`` to the contract (if not already present).
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* Change ``_slot`` and ``_offset`` suffixes in inline assembly to ``.slot`` and ``.offset``, respectively.
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