solidity/docs/070-breaking-changes.rst

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Solidity v0.7.0 Breaking Changes
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This section highlights the main breaking changes introduced in Solidity
version 0.7.0, along with the reasoning behind the changes and how to update
affected code.
For the full list check
`the release changelog <https://github.com/ethereum/solidity/releases/tag/v0.7.0>`_.
How to update your code
=======================
This section gives detailed instructions on how to update prior code for every breaking change.
* Change ``f.value(...)()`` to ``f{value: ...}()``. Similarly ``(new C).value(...)()`` to
``(new C){value: ...}()`` and ``f.gas(...)()`` to ``f{gas: ...}()``.