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If you want to start coding smart contract this is a quite smooth environment to set up:
Use Remix online IDE for coding and link it with your local node
Download testRPC on your PC and run a local ...
Adding constant you're telling to the compiler that this function is going to perform only read actions (calls instead of transactions), and calls have no gas costs.
So if you have to set up a getter ...
In your function definition, you're missing the returns param type:
function get_balance(address _add) returns(<balance_var_type>)
{
balance = balanceOf[_add];
return balance;
}
Try ...
You can download testRCP (repo https://github.com/ethereumjs/testrpc) and run a local node on your PC, then set up Remix to run on your local node.
Setting remix:
On 'Contract' - 'Environment' ...
Ok, sorry for the question, it's quite simple. You just need to change the decimals of your token. See this discussion for more details: Float not allowed in solidity vs decimal places asked for token ...
Is it possible for address A and address B to map to the same index within the mapping?
No, it's not possible because with mapping you define a unique link between the address and the amount ...
A token can be recognized by wallets (such as Remix, Mew) if it follows these
directives: https://theethereum.wiki/w/index.php/ERC20_Token_Standard
I had the same problem with MEW that instead of ...
Ok, I fixed it by replacing msg.sender with the owner address var declared in the constructor. Does anyone know why now it works?
contract HelloWorld {
mapping (address => uint) balances;
...
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