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| author | chriseth <chris@ethereum.org> | 2018-08-13 22:07:29 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-08-13 22:07:29 +0800 |
| commit | 463f4b0f35a9eb930a4cce164135d726c091c50e (patch) | |
| tree | ffcda866645561d6c9ec3a5d492261514022c5a9 /docs | |
| parent | 23789482280217806a2738c413e3ef1b4afba1d6 (diff) | |
| parent | 631794b72e6bb8c590368d2a2bd6eec9a31cc2e2 (diff) | |
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Merge pull request #4618 from ethereum/docs-1211-contract-type
Add contract type to types documentation
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/types.rst | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/docs/types.rst b/docs/types.rst index bcd3ce9c..5efb24e3 100644 --- a/docs/types.rst +++ b/docs/types.rst @@ -200,25 +200,38 @@ The ``.gas()`` option is available on all three methods, while the ``.value()`` .. note:: The use of ``callcode`` is discouraged and will be removed in the future. +.. index:: ! contract type, ! type; contract + +.. _contract_types: + Contract Types -------------- -Every :ref:`contract<contracts>` defines its own type. Contracts can be implicitly converted -to contracts they inherit from. They can be explicitly converted from and to ``address`` types. +Every :ref:`contract<contracts>` defines its own type. +You can implicitly convert contracts to contracts they inherit from, +and explicitly convert them to and from the ``address`` type. -The data representation of a contract is identical to that of the ``address`` type and -this type is also used in the :ref:`ABI<ABI>`. +.. note:: + Starting with version 0.5.0 contracts do not derive from the address type, + but can still be explicitly converted to address. -Contracts do not support any operators. +If you declare a local variable of contract type (`MyContract c`), you can call +functions on that contract. Take care to assign it from somewhere that is the +same contract type. -The members of contract types are the external functions of the contract including -public state variables. +You can also instantiate contracts (which means they are newly created). You +can find more details in the :ref:`'Contracts via new'<creating-contracts>` +section. -.. note:: - Starting with version 0.5.0 contracts do not derive from the address type, but can still be explicitly converted to address. +The data representation of a contract is identical to that of the ``address`` +type and this type is also used in the :ref:`ABI<ABI>`. -.. index:: byte array, bytes32 +Contracts do not support any operators. +The members of contract types are the external functions of the contract +including public state variables. + +.. index:: byte array, bytes32 Fixed-size byte arrays ---------------------- |