compilationgo-ethereumsolidity
Is it possible to load Solidity source file .sol file to go-ethereum.
I am using the 'loadScript' method by saving a .js file like the following and loads it.
source = "contract test {\n" +
" /// @notice will multiply `a` by 7.\n" +
" function multiply(uint a) returns(uint d) {\n" +
" return a * 7;\n" +
" }\n" +
"} ";
Is there any better way? I don't want to use browser-solidity
You need to add the constant keyword to the test() function like:
pragma solidity ^0.4.0;
contract Test {
mapping (address => uint256) weismap;
function bet(uint vote) payable returns (uint256 weis) {
if (msg.value==0)
throw;
weismap[msg.sender]= msg.value;
return weismap[msg.sender];
}
function test() constant returns (uint myVote) {
return 1;
}
}
Calling bet(...) with the value 2. Note that I'm sending 2 ethers as well with the transaction:
Now I call test() AND I've left the value 2. This call to test() fails as the constant function is being called as a transaction, not a read of the values off the blockchain:
If I call test() AND I've set value to blank, this call to test() succeeds as the constant function is being called as a read of the values off the blockchain:
Solidity cannot return string arrays in current version. One workaround is to serialize the string array and then de-serialize it on client side.
An example :
https://hackernoon.com/serializing-string-arrays-in-solidity-db4b6037e520
Best Answer
I found this Solidity Compile Helper ruby wrapper
Usage
This will generate a javascript file and print out a statement like the following.
Paste this statement into the geth console. Your code will be loaded and your contract will be deployed automatically.
There are also a few helper functions to easily deploy the contracts.