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| author | chriseth <c@ethdev.com> | 2017-03-10 00:03:53 +0800 |
|---|---|---|
| committer | chriseth <c@ethdev.com> | 2017-03-14 21:21:33 +0800 |
| commit | 47cd8964b8617e5c7e93232719224c8334a4c764 (patch) | |
| tree | ea29137b7c499b0ddbef1e62bb8a4d401c694224 /docs/miscellaneous.rst | |
| parent | 9aab3b8639afa6e30e866e052a412b6f39c6ef6c (diff) | |
| download | dexon-solidity-47cd8964b8617e5c7e93232719224c8334a4c764.tar.gz dexon-solidity-47cd8964b8617e5c7e93232719224c8334a4c764.tar.zst dexon-solidity-47cd8964b8617e5c7e93232719224c8334a4c764.zip | |
Require and Assert.
Diffstat (limited to 'docs/miscellaneous.rst')
| -rw-r--r-- | docs/miscellaneous.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/miscellaneous.rst b/docs/miscellaneous.rst index e3ec0efb..2865d884 100644 --- a/docs/miscellaneous.rst +++ b/docs/miscellaneous.rst @@ -435,7 +435,7 @@ The following is the order of precedence for operators, listed in order of evalu | *16* | Comma operator | ``,`` | +------------+-------------------------------------+--------------------------------------------+ -.. index:: block, coinbase, difficulty, number, block;number, timestamp, block;timestamp, msg, data, gas, sender, value, now, gas price, origin, revert, keccak256, ripemd160, sha256, ecrecover, addmod, mulmod, cryptography, this, super, selfdestruct, balance, send +.. index:: assert, block, coinbase, difficulty, number, block;number, timestamp, block;timestamp, msg, data, gas, sender, value, now, gas price, origin, revert, require, keccak256, ripemd160, sha256, ecrecover, addmod, mulmod, cryptography, this, super, selfdestruct, balance, send Global Variables ================ @@ -453,6 +453,8 @@ Global Variables - ``now`` (``uint``): current block timestamp (alias for ``block.timestamp``) - ``tx.gasprice`` (``uint``): gas price of the transaction - ``tx.origin`` (``address``): sender of the transaction (full call chain) +- ``assert(bool condition)``: abort execution and revert state changes if condition is ``false`` (use for internal error) +- ``require(bool condition)``: abort execution and revert state changes if condition is ``false`` (use for malformed input) - ``revert()``: abort execution and revert state changes - ``keccak256(...) returns (bytes32)``: compute the Ethereum-SHA-3 (Keccak-256) hash of the (tightly packed) arguments - ``sha3(...) returns (bytes32)``: an alias to `keccak256()` |