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Merge pull request #13024 from SamuelOsewa/patch-2

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Remove notes section from Cheatsheet
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Kamil Śliwak 2022-05-20 16:22:52 +02:00 committed by GitHub
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@ -135,35 +135,6 @@ Global Variables
- ``type(T).min`` (``T``): the minimum value representable by the integer type ``T``, see :ref:`Type Information<meta-type>`.
- ``type(T).max`` (``T``): the maximum value representable by the integer type ``T``, see :ref:`Type Information<meta-type>`.
.. note::
When contracts are evaluated off-chain rather than in context of a transaction included in a
block, you should not assume that ``block.*`` and ``tx.*`` refer to values from any specific
block or transaction. These values are provided by the EVM implementation that executes the
contract and can be arbitrary.
.. note::
Do not rely on ``block.timestamp`` or ``blockhash`` as a source of randomness,
unless you know what you are doing.
Both the timestamp and the block hash can be influenced by miners to some degree.
Bad actors in the mining community can for example run a casino payout function on a chosen hash
and just retry a different hash if they did not receive any money.
The current block timestamp must be strictly larger than the timestamp of the last block,
but the only guarantee is that it will be somewhere between the timestamps of two
consecutive blocks in the canonical chain.
.. note::
The block hashes are not available for all blocks for scalability reasons.
You can only access the hashes of the most recent 256 blocks, all other
values will be zero.
.. note::
In version 0.5.0, the following aliases were removed: ``suicide`` as alias for ``selfdestruct``,
``msg.gas`` as alias for ``gasleft``, ``block.blockhash`` as alias for ``blockhash`` and
``sha3`` as alias for ``keccak256``.
.. note::
In version 0.7.0, the alias ``now`` (for ``block.timestamp``) was removed.
.. index:: visibility, public, private, external, internal