diff options
Diffstat (limited to 'solidity.html.markdown')
| -rw-r--r-- | solidity.html.markdown | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/solidity.html.markdown b/solidity.html.markdown index c0074b33..acf750f7 100644 --- a/solidity.html.markdown +++ b/solidity.html.markdown @@ -4,6 +4,7 @@ filename: learnSolidity.sol contributors: - ["Nemil Dalal", "https://www.nemil.com"] - ["Joseph Chow", ""] + - ["Bhoomtawath Plinsut", "https://github.com/varshard"] --- Solidity lets you program on [Ethereum](https://www.ethereum.org/), a @@ -109,10 +110,9 @@ contract SimpleBank { // CapWords /// @notice Get balance /// @return The balance of the user - // 'constant' prevents function from editing state variables; + // 'view' (ex: constant) prevents function from editing state variables; // allows function to run locally/off blockchain - // NOTE: 'constant' on functions is an alias to 'view', but this is deprecated and is planned to be dropped in version 0.5.0. - function balance() constant public returns (uint) { + function balance() view public returns (uint) { return balances[msg.sender]; } } @@ -342,25 +342,26 @@ function increment(uint x, uint y) returns (uint x, uint y) { // Call previous functon uint (a,b) = increment(1,1); -// 'constant' (alias for 'view') +// 'view' (alias for 'constant') // indicates that function does not/cannot change persistent vars -// Constant function execute locally, not on blockchain +// View function execute locally, not on blockchain +// Noted: constant keyword will soon be deprecated. uint y = 1; -function increment(uint x) constant returns (uint x) { +function increment(uint x) view returns (uint x) { x += 1; y += 1; // this line would fail - // y is a state variable, and can't be changed in a constant function + // y is a state variable, and can't be changed in a view function } -// 'pure' is more strict than 'constant', and does not +// 'pure' is more strict than 'view' or 'constant', and does not // even allow reading of state vars // The exact rules are more complicated, so see more about -// constant/pure: +// view/pure: // http://solidity.readthedocs.io/en/develop/contracts.html#view-functions // 'Function Visibility specifiers' -// These can be placed where 'constant' is, including: +// These can be placed where 'view' is, including: // public - visible externally and internally (default for function) // external - only visible externally (including a call made with this.) // private - only visible in the current contract |