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Added note recommending to avoid relying on hardcoded gas values

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gitpusha 2020-02-11 10:32:33 +01:00
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docs/types/value-types.rst
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@ -300,6 +300,11 @@ All three functions ``call``, ``delegatecall`` and ``staticcall`` are very low-l
The ``gas`` option is available on all three methods, while the ``value`` option is not
supported for ``delegatecall``.
.. note::
It is best to avoid relying on hardcoded gas values in your smart contract code,
regardless of whether state is read from or written to, as this can have many pitfalls.
Also, access to gas might change in the future.
.. note::
All contracts can be converted to ``address`` type, so it is possible to query the balance of the
current contract using ``address(this).balance``.