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Merge pull request #6867 from ethereum/docs-style-fix-usingfor

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[DOCS] Bring Using For code examples inline with style guide
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chriseth 2019-05-29 20:08:19 +02:00 committed by GitHub
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54
docs/contracts/using-for.rst
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@ -33,39 +33,41 @@ Let us rewrite the set example from the
pragma solidity >=0.4.16 <0.7.0; pragma solidity >=0.4.16 <0.7.0;
// This is the same code as before, just without comments // This is the same code as before, just without comments
library Set { library Set {
struct Data { mapping(uint => bool) flags; } struct Data { mapping(uint => bool) flags; }
function insert(Data storage self, uint value) function insert(Data storage self, uint value)
public public
returns (bool) returns (bool)
{ {
if (self.flags[value]) if (self.flags[value])
return false; // already there return false; // already there
self.flags[value] = true; self.flags[value] = true;
return true; return true;
} }
function remove(Data storage self, uint value) function remove(Data storage self, uint value)
public public
returns (bool) returns (bool)
{ {
if (!self.flags[value]) if (!self.flags[value])
return false; // not there return false; // not there
self.flags[value] = false; self.flags[value] = false;
return true; return true;
} }
function contains(Data storage self, uint value) function contains(Data storage self, uint value)
public public
view view
returns (bool) returns (bool)
{ {
return self.flags[value]; return self.flags[value];
} }
} }
contract C { contract C {
using Set for Set.Data; // this is the crucial change using Set for Set.Data; // this is the crucial change
Set.Data knownValues; Set.Data knownValues;