Utility Contracts

The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.

The Solidity tutorial subcurrency, compiled without the optimiser

The Solidity tutorial subcurrency, with the balance reader restricted to the minter

The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.

The 2015 ethereum.org democracy tutorial under its original name: token holders propose payments, vote a position, and the contract pays out if the vote passes.

The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.

Pong, half of a cross-contract return value test

Ping, half of a cross-contract return value test

Pong, half of a cross-contract return value test

Ping, half of a cross-contract return value test

Pong, half of a cross-contract return value test

The ethereum.org crowdsale tutorial: contributions run to a deadline against a goal, pay out a separate reward token, and are refunded if the goal is missed.

Pong, half of a cross-contract return value test

Pong, half of a cross-contract return value test

A time lock: its owner sets one future expiry, and after that moment passes redeem() destroys the contract and returns its balance.

A two dimensional array, filled at deployment

A two dimensional array, filled at deployment

A two dimensional array, filled at deployment

A two dimensional array, filled at deployment

A two dimensional array, filled at deployment

The Frontier greeter without the kill function

The Pong half of Cyrus Adkisson's contract to contract call exercise

Pong, half of a cross-contract return value test

Ping, half of a cross-contract return value test