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Diffstat (limited to 'docs/frequently-asked-questions.rst')
| -rw-r--r-- | docs/frequently-asked-questions.rst | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/docs/frequently-asked-questions.rst b/docs/frequently-asked-questions.rst index 8a68ae5b..03ee8388 100644 --- a/docs/frequently-asked-questions.rst +++ b/docs/frequently-asked-questions.rst @@ -68,7 +68,7 @@ creator. Save it. Then ``selfdestruct(creator);`` to kill and return funds. Note that if you ``import "mortal"`` at the top of your contracts and declare ``contract SomeContract is mortal { ...`` and compile with a compiler that already -has it (which includes `browser-solidity <https://ethereum.github.io/browser-solidity/>`_), then +has it (which includes `Remix <https://remix.ethereum.org/>`_), then ``kill()`` is taken care of for you. Once a contract is "mortal", then you can ``contractname.kill.sendTransaction({from:eth.coinbase})``, just the same as my examples. @@ -665,8 +665,7 @@ What does the following strange check do in the Custom Token contract? :: - if (balanceOf[_to] + _value < balanceOf[_to]) - throw; + require((balanceOf[_to] + _value) >= balanceOf[_to]); Integers in Solidity (and most other machine-related programming languages) are restricted to a certain range. For ``uint256``, this is ``0`` up to ``2**256 - 1``. If the result of some operation on those numbers |