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| -rw-r--r-- | docs/solidity-by-example.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/solidity-by-example.rst b/docs/solidity-by-example.rst index ca6b970c..139c8a42 100644 --- a/docs/solidity-by-example.rst +++ b/docs/solidity-by-example.rst @@ -535,6 +535,9 @@ Safe Remote Purchase enum State { Created, Locked, Inactive } State public state; + // Ensure that `msg.value` is an even number. + // Division will truncate if it is an odd number. + // Check via multiplication that it wasn't an odd number. function Purchase() payable { seller = msg.sender; value = msg.value / 2; |