diff options
| -rw-r--r-- | docs/frequently-asked-questions.rst | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/docs/frequently-asked-questions.rst b/docs/frequently-asked-questions.rst index 6ac5a9e9..b1ca04ff 100644 --- a/docs/frequently-asked-questions.rst +++ b/docs/frequently-asked-questions.rst @@ -666,6 +666,22 @@ gas and return your 20 Wei). 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. +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? ================================================================== |