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Document the .value() and .gas() modifiers

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Alex Beregszaszi 2017-03-15 23:50:58 +00:00
parent e34a9600f2
commit 6ece0d6c2f
2 changed files with 5 additions and 3 deletions
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6
docs/control-structures.rst
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@ -113,8 +113,8 @@ actual contract has not been created yet.
Functions of other contracts have to be called externally. For an external call,
all function arguments have to be copied to memory.
When calling functions
of other contracts, the amount of Wei sent with the call and the gas can be specified::
When calling functions of other contracts, the amount of Wei sent with the call and
the gas can be specified with special options ``.value()`` and ``.gas()``, respectively::
contract InfoFeed {
function info() payable returns (uint ret) { return 42; }
@ -235,7 +235,7 @@ creation-dependencies are not possible.
}
}
As seen in the example, it is possible to forward Ether to the creation,
As seen in the example, it is possible to forward Ether to the creation using the ``.value()`` option,
but it is not possible to limit the amount of gas. If the creation fails
(due to out-of-stack, not enough balance or other problems), an exception
is thrown.

2
docs/types.rst
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@ -123,6 +123,8 @@ In a similar way, the function ``delegatecall`` can be used: The difference is t
All three functions ``call``, ``delegatecall`` and ``callcode`` are very low-level functions and should only be used as a *last resort* as they break the type-safety of Solidity.
The ``.gas()`` option is available on all three methods, while the ``.value()`` option is not supported for ``delegatecall``.
.. note::
All contracts inherit the members of address, so it is possible to query the balance of the
current contract using ``this.balance``.