solidity/docs/types.rst

.. index:: type

.. _types:

*****
Types
*****

Solidity is a statically typed language, which means that the type of each
variable (state and local) needs to be specified.
Solidity provides several elementary types which can be combined to form complex types.

In addition, types can interact with each other in expressions containing
operators. For a quick reference of the various operators, see :ref:`order`.

The concept of "undefined" or "null" values does not exist in Solidity, but newly
declared variables always have a :ref:`default value<default-value>` dependent
on its type. To handle any unexpected values, you should use the :ref:`revert function<assert-and-require>` to revert the whole transaction, or return a
tuple with a second ``bool`` value denoting success.

.. include:: types/value-types.rst

.. include:: types/reference-types.rst

.. include:: types/mapping-types.rst

.. include:: types/operators.rst

.. include:: types/conversion.rst
Imported documentation. 2015-12-07 20:16:25 +00:00			`.. index:: type`

Added in-depth links for further reading to the state variable, function and function modifier overview in the structure section 2016-02-19 10:30:00 +00:00			`.. _types:`

Imported documentation. 2015-12-07 20:16:25 +00:00			`*****`
			`Types`
			`*****`

			`Solidity is a statically typed language, which means that the type of each`
documentation: adjustments to not use the "var" keyword 2018-06-18 13:58:10 +00:00			`variable (state and local) needs to be specified.`
			`Solidity provides several elementary types which can be combined to form complex types.`
Imported documentation. 2015-12-07 20:16:25 +00:00
Add link to operator table 2016-07-20 19:35:38 +00:00			`In addition, types can interact with each other in expressions containing`
			operators. For a quick reference of the various operators, see :ref:`order`.

Update docs/types.rst Co-Authored-By: ChrisChinchilla <chriswhward@gmail.com> 2018-11-23 16:16:18 +00:00			`The concept of "undefined" or "null" values does not exist in Solidity, but newly`
Add default value details 2018-11-23 09:16:30 +00:00			declared variables always have a :ref:`default value<default-value>` dependent
			on its type. To handle any unexpected values, you should use the :ref:`revert function<assert-and-require>` to revert the whole transaction, or return a
docs: fix formatting errors and style inconsistencies 2020-04-20 16:24:31 +00:00			tuple with a second ``bool`` value denoting success.
Move undefined FAQ item 2018-11-15 11:02:38 +00:00
Split Value Types docs 2019-01-09 11:06:37 +00:00			`.. include:: types/value-types.rst`
Part of the documentation. 2016-10-19 16:43:07 +00:00
Split Reference types doc into new file 2019-01-09 11:15:58 +00:00			`.. include:: types/reference-types.rst`
Imported documentation. 2015-12-07 20:16:25 +00:00
Split mapping types into new file 2019-01-09 11:25:45 +00:00			`.. include:: types/mapping-types.rst`
Merge the documentation about mappings 2016-10-15 21:50:46 +00:00
Split operators involving LValues into new doc 2019-01-09 11:37:20 +00:00			`.. include:: types/operators.rst`
Imported documentation. 2015-12-07 20:16:25 +00:00
docs: fix formatting errors and style inconsistencies 2020-04-20 16:24:31 +00:00			`.. include:: types/conversion.rst`