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Andreas Olofsson androlo

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@androlo
androlo / testmodlibs.sol
Created July 30, 2017 22:24
pragma solidity ^0.4.13;
library InputChecker {
function isAddressZero(address addr) constant internal returns (bool) {
return addr == 0;
}
}
contract CheckInput {
@androlo
androlo / keybase.md
Created March 1, 2017 00:18

Keybase proof

I hereby claim:

  • I am androlo on github.
  • I am androlo (https://keybase.io/androlo) on keybase.
  • I have a public key ASAWzYs7FDGMU6CcChAJw1v532h6XvB9LF_WEebcVAB3SAo

To claim this, I am signing this object:

@androlo
androlo / address_set_fasm_v1.sol
Created March 31, 2016 21:48
contract AddressSet {
function add(address addr) returns (bool) {
assembly {
let index := sload(addr)
let added := not(index) // If offset index for 'addr' isn't 0, add to set.
jumpi(tag_write, added)
tag_end:
mstore(0x0, added)
return(0x0, 0x20)
@androlo
androlo / address_set_asm_v0.sol
Last active March 31, 2016 04:47
contract AddressSet {
// uint constant SIZE_ADDRESS = 0x10;
// uint constant STORAGE_OFFSET = 0x11;
function add(address addr) returns (bool added) {
assembly { // [garbage, addr, added]
swap1
dup1
sload // Load current index.
@androlo
androlo / gist:2ac5e8bb13967952d24d
Created February 8, 2016 06:33
Basic Tutorial Packed
contract Errors {
uint16 constant NO_ERROR = 0;
uint16 constant ERROR = 1;
uint16 constant RESOURCE_ERROR = 1000;
uint16 constant RESOURCE_NOT_FOUND = 1001;
uint16 constant RESOURCE_ALREADY_EXISTS = 1002;
uint16 constant ACCESS_DENIED = 2000;
uint16 constant PARAMETER_ERROR = 3000;
uint16 constant INVALID_PARAM_VALUE = 3001;
@androlo
androlo / gist:507836f941012055c5c5
Last active February 8, 2016 05:59
Basic Tutorial Univseral DApp
[{"name":"CoinTest","interface":"[{\"constant\":true,\"inputs\":[],\"name\":\"proxyAddress\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"myAddress\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"receiver\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[{\"name\":\"\",\"type\":\"uint16\"}],\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"receiver\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"sendAsProxy\",\"outputs\":[{\"name\":\"\",\"type\":\"uint16\"}],\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"receiver\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"mintAsProxy\",\"outputs\":[{\"name\":\"\",\"type\":\"uint16\"}],\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"receiver\",\"type\":\"address\"},
@androlo
androlo / gist:21096d64b41d429852d0
Created December 19, 2015 09:07
contract SomeAddressMapper is AddressMapper {
IAMap map;
function addAddress(address addr) returns (bool had) {
return _insert(map, addr, true);
}
function removeAddress(address addr) returns (bool removed) {
return _remove(map, addr);
@androlo
androlo / AddressMapper.sol
Created December 19, 2015 08:59
contract AddressMapper {
struct IAMElement {
uint keyIndex;
bool value;
}
struct IAMap
{
mapping(address => IAMElement) data;