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authorYoichi Hirai <i@yoichihirai.com>2017-07-27 17:30:12 +0800
committerGitHub <noreply@github.com>2017-07-27 17:30:12 +0800
commita20e5fc0481d49616ea3a931e72b5c2e8b255e73 (patch)
tree9046041af102c4dd68a01d3a1944b0edad84fcda /docs
parent241322e80555acddff919705e911217e41913b75 (diff)
parent31449c9834cb2b1c7fe4b6d7dc554cbc65f87c20 (diff)
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Merge pull request #2636 from ethereum/docs-random
Random documentation fixes
Diffstat (limited to 'docs')
-rw-r--r--docs/miscellaneous.rst5
-rw-r--r--docs/security-considerations.rst3
-rw-r--r--docs/solidity-by-example.rst17
-rw-r--r--docs/types.rst10
-rw-r--r--docs/units-and-global-variables.rst15
5 files changed, 29 insertions, 21 deletions
diff --git a/docs/miscellaneous.rst b/docs/miscellaneous.rst
index 1fcdb2fc..e364bee7 100644
--- a/docs/miscellaneous.rst
+++ b/docs/miscellaneous.rst
@@ -469,7 +469,7 @@ Global Variables
- ``require(bool condition)``: abort execution and revert state changes if condition is ``false`` (use for malformed input or error in external component)
- ``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()`
+- ``sha3(...) returns (bytes32)``: an alias to `keccak256`
- ``sha256(...) returns (bytes32)``: compute the SHA-256 hash of the (tightly packed) arguments
- ``ripemd160(...) returns (bytes20)``: compute the RIPEMD-160 hash of the (tightly packed) arguments
- ``ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) returns (address)``: recover address associated with the public key from elliptic curve signature, return zero on error
@@ -478,6 +478,7 @@ Global Variables
- ``this`` (current contract's type): the current contract, explicitly convertible to ``address``
- ``super``: the contract one level higher in the inheritance hierarchy
- ``selfdestruct(address recipient)``: destroy the current contract, sending its funds to the given address
+- ``suicide(address recipieint)``: an alias to `selfdestruct``
- ``<address>.balance`` (``uint256``): balance of the :ref:`address` in Wei
- ``<address>.send(uint256 amount) returns (bool)``: send given amount of Wei to :ref:`address`, returns ``false`` on failure
- ``<address>.transfer(uint256 amount)``: send given amount of Wei to :ref:`address`, throws on failure
@@ -515,7 +516,7 @@ Reserved Keywords
These keywords are reserved in Solidity. They might become part of the syntax in the future:
-``abstract``, ``after``, ``case``, ``catch``, ``default``, ``final``, ``in``, ``inline``, ``interface``, ``let``, ``match``, ``null``,
+``abstract``, ``after``, ``case``, ``catch``, ``default``, ``final``, ``in``, ``inline``, ``let``, ``match``, ``null``,
``of``, ``pure``, ``relocatable``, ``static``, ``switch``, ``try``, ``type``, ``typeof``, ``view``.
Language Grammar
diff --git a/docs/security-considerations.rst b/docs/security-considerations.rst
index 9efc5721..6586cb5f 100644
--- a/docs/security-considerations.rst
+++ b/docs/security-considerations.rst
@@ -280,8 +280,7 @@ Formal Verification
Using formal verification, it is possible to perform an automated mathematical
proof that your source code fulfills a certain formal specification.
The specification is still formal (just as the source code), but usually much
-simpler. There is a prototype in Solidity that performs formal verification and
-it will be better documented soon.
+simpler.
Note that formal verification itself can only help you understand the
difference between what you did (the specification) and how you did it
diff --git a/docs/solidity-by-example.rst b/docs/solidity-by-example.rst
index e1fd4914..71d27192 100644
--- a/docs/solidity-by-example.rst
+++ b/docs/solidity-by-example.rst
@@ -101,7 +101,7 @@ of votes.
/// Delegate your vote to the voter `to`.
function delegate(address to) {
// assigns reference
- Voter sender = voters[msg.sender];
+ Voter storage sender = voters[msg.sender];
require(!sender.voted);
// Self-delegation is not allowed.
@@ -141,7 +141,7 @@ of votes.
/// Give your vote (including votes delegated to you)
/// to proposal `proposals[proposal].name`.
function vote(uint proposal) {
- Voter sender = voters[msg.sender];
+ Voter storage sender = voters[msg.sender];
require(!sender.voted);
sender.voted = true;
sender.vote = proposal;
@@ -289,7 +289,7 @@ activate themselves.
/// Withdraw a bid that was overbid.
function withdraw() returns (bool) {
- var amount = pendingReturns[msg.sender];
+ uint amount = pendingReturns[msg.sender];
if (amount > 0) {
// It is important to set this to zero because the recipient
// can call this function again as part of the receiving call
@@ -491,8 +491,8 @@ high or low invalid bids.
}
/// Withdraw a bid that was overbid.
- function withdraw() returns (bool) {
- var amount = pendingReturns[msg.sender];
+ function withdraw() {
+ uint amount = pendingReturns[msg.sender];
if (amount > 0) {
// It is important to set this to zero because the recipient
// can call this function again as part of the receiving call
@@ -500,13 +500,8 @@ high or low invalid bids.
// conditions -> effects -> interaction).
pendingReturns[msg.sender] = 0;
- if (!msg.sender.send(amount)){
- // No need to call throw here, just reset the amount owing
- pendingReturns[msg.sender] = amount;
- return false;
- }
+ msg.sender.transfer(amount);
}
- return true;
}
/// End the auction and send the highest bid
diff --git a/docs/types.rst b/docs/types.rst
index b963c5b7..dd9c6269 100644
--- a/docs/types.rst
+++ b/docs/types.rst
@@ -135,6 +135,9 @@ The ``.gas()`` option is available on all three methods, while the ``.value()``
All contracts inherit the members of address, so it is possible to query the balance of the
current contract using ``this.balance``.
+.. note::
+ The use of ``callcode`` is discouraged and will be removed in the future.
+
.. warning::
All these functions are low-level functions and should be used with care.
Specifically, any unknown contract might be malicious and if you call it, you
@@ -436,7 +439,8 @@ Another example that uses external function types::
}
}
-Note that lambda or inline functions are planned but not yet supported.
+.. note::
+ Lambda or inline functions are planned but not yet supported.
.. index:: ! type;reference, ! reference type, storage, memory, location, array, struct
@@ -739,7 +743,7 @@ shown in the following example:
}
function contribute(uint campaignID) payable {
- Campaign c = campaigns[campaignID];
+ Campaign storage c = campaigns[campaignID];
// Creates a new temporary memory struct, initialised with the given values
// and copies it over to storage.
// Note that you can also use Funder(msg.sender, msg.value) to initialise.
@@ -748,7 +752,7 @@ shown in the following example:
}
function checkGoalReached(uint campaignID) returns (bool reached) {
- Campaign c = campaigns[campaignID];
+ Campaign storage c = campaigns[campaignID];
if (c.amount < c.fundingGoal)
return false;
uint amount = c.amount;
diff --git a/docs/units-and-global-variables.rst b/docs/units-and-global-variables.rst
index 7d21f065..64795306 100644
--- a/docs/units-and-global-variables.rst
+++ b/docs/units-and-global-variables.rst
@@ -35,7 +35,9 @@ These suffixes cannot be applied to variables. If you want to
interpret some input variable in e.g. days, you can do it in the following way::
function f(uint start, uint daysAfter) {
- if (now >= start + daysAfter * 1 days) { ... }
+ if (now >= start + daysAfter * 1 days) {
+ // ...
+ }
}
Special Variables and Functions
@@ -70,6 +72,7 @@ Block and Transaction Properties
``msg.value`` can change for every **external** function call.
This includes calls to library functions.
+.. note::
If you want to implement access restrictions in library functions using
``msg.sender``, you have to manually supply the value of
``msg.sender`` as an argument.
@@ -102,10 +105,10 @@ Mathematical and Cryptographic Functions
compute ``(x * y) % k`` where the multiplication is performed with arbitrary precision and does not wrap around at ``2**256``.
``keccak256(...) returns (bytes32)``:
compute the Ethereum-SHA-3 (Keccak-256) hash of the (tightly packed) arguments
-``sha3(...) returns (bytes32)``:
- alias to ``keccak256()``
``sha256(...) returns (bytes32)``:
compute the SHA-256 hash of the (tightly packed) arguments
+``sha3(...) returns (bytes32)``:
+ alias to ``keccak256``
``ripemd160(...) returns (bytes20)``:
compute RIPEMD-160 hash of the (tightly packed) arguments
``ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) returns (address)``:
@@ -157,6 +160,9 @@ For more information, see the section on :ref:`address`.
to make safe Ether transfers, always check the return value of ``send``, use ``transfer`` or even better:
Use a pattern where the recipient withdraws the money.
+.. note::
+ The use of ``callcode`` is discouraged and will be removed in the future.
+
.. index:: this, selfdestruct
Contract Related
@@ -168,5 +174,8 @@ Contract Related
``selfdestruct(address recipient)``:
destroy the current contract, sending its funds to the given :ref:`address`
+``suicide(address recipient)``:
+ alias to ``selfdestruct``
+
Furthermore, all functions of the current contract are callable directly including the current function.