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Update frequently-asked-questions.rst

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RJ 2016-03-30 10:43:39 -05:00
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docs/frequently-asked-questions.rst
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@ -666,6 +666,22 @@ gas and return your 20 Wei).
In the above example, the low-level function `call` is used to invoke another In the above example, the low-level function `call` is used to invoke another
contract with `p.data` as payload and `p.amount` Wei is sent with that call. contract with `p.data` as payload and `p.amount` Wei is sent with that call.
What happens to a mapping copied from a mapping of structs?
===========================================================
This is a very interesting question. Suppose that we have a contract field set up like such::
struct user{
mapping(string => address) usedContracts;
}
mapping(uint => user) userList;
function somefunction{
user userA = userList[1];
userList[2] = userA;
}
In this case, the mapping of the struct being copied over into the userList is ignored.
How do I initialize a contract with only a specific amount of wei? How do I initialize a contract with only a specific amount of wei?
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