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Results tagged with solidity
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Solidity is a contract-oriented, high-level language whose syntax is similar to that of JavaScript and it is designed for writing smart contracts in Ethereum to run on the EVM. Solidity is statically typed, supports inheritance, libraries and complex user-defined types among other features.
1
vote
0
answers
2k
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How can I check if a variable or an array is set or empty or null? [duplicate]
How can I check if a variable or an array is already set, empty or null in solidity?
For example,
mapping (string => address) addresses;
How can we know addresses[key] is set or not? …
- 5,799
33
votes
3
answers
24k
views
What is the 'this' keyword in Solidity?
What is the specification of the 'this' keyword in Solidity?
How does it work? … Sample code from Solidity Features · ethereum/wiki Wiki
contract Helper {
function getBalance() returns (uint bal) {
return this.balance; // balance is "inherited" from the address type
}
} …
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12
votes
2
answers
4k
views
How many arguments can Solidity take?
I'd like to set lots of arguments in solidity functions. I wonder how many arguments contracts can handle.
Does it depend on number of arguments or data size? …
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15
votes
1
answer
11k
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How should we set a import path in solidity?
I failed to compile a solidity file with import statement.
Error: Source not found: File not found.
import './contract.sol';
How should we set a import path? … web3.eth.compile.solidity(data);
Layout of a Solidity Source File — Solidity 0.2.0 documentation
http://solidity.readthedocs.org/en/latest/layout-of-source-files.html …
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30
votes
2
answers
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What is the merit of creating new smart contract languages like Solidity instead of using ot...
What is the pros and cons of creating new languages like Solidity for smart contracts instead of using other computer languages like Golang or Python? …
- 5,799