This is a simple smart contract that acts as an escrow-like account for crowdfunding projects.

• Anyone, let's say Bob, deploys the smart contract with the following constructor arguments - (_title, _description, _endDate, _goalAmount)
• Title
  • Title/name of the crowdfunding project
• Description
  • Description of the project
• End Date
  • The date (as a 10 digit unix timestamp) when the escrow ends and the raised funds are transferred to the project creator (same as the deployer of the smart contract)
• Goal Amount
  • How much the project creator is trying to raise (in WEI)

• commitFunds()
  • A public, payable function that anyone can send ETH to. Once sent, it will be locked in until either the endDate is reached or they cancel their commitment
• cancelCommitment(uint _amount)
  • A public function that allows anyone to revoke their commitment or a portion of it (must already have a commitment greater than 0)
• closeEscrow()
  • A public function that can only be called when block.timestamp >= endDate (aka when the escrow period ends). Once successfully called, any funds held in escrow will get transferred to the deployer of the smart contract
• goalAmountAchieved
  • A public boolean that tells you if the fundraising goal has been achieved
• commitmentAmounts
  • A public (address => uint) mapping that allows you to check how much any given address has committed to the project