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edited Dec 16, 2017 at 11:05

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What does setting the length property of an array do.? In most other languages length is a function that return the length of an array.

I have the following code:

struct ledger_t {
  uint8 WinningNum1;
  uint8 WinningNum2;
  uint8 WinningNum3;
  uint8 WinningNum4;
  bytes32 ClosingHash;
  bytes32 OpeningHash;
  mapping(address=>bet_t) bets;
  uint Guess4OutOf4;
  uint Guess3OutOf4;
  uint Guess2OutOf4;
  uint Guess1OutOf4;
  uint PriceOfTicket;
  uint ExpirationTime; //for eventual refunds only, ~2 weeks after draw announced
}
ledger_t[] public ledger;

//constructor
function TheEthereumLottery() {
  owner = msg.sender;
  ledger.length = 0;
  IndexOfCurrentDraw = 0;
  referral_fee = 90;
}

What does setting the length property of an array do. In most other languages length is a function that return the length of an array.

I have the following code:

struct ledger_t {
  uint8 WinningNum1;
  uint8 WinningNum2;
  uint8 WinningNum3;
  uint8 WinningNum4;
  bytes32 ClosingHash;
  bytes32 OpeningHash;
  mapping(address=>bet_t) bets;
  uint Guess4OutOf4;
  uint Guess3OutOf4;
  uint Guess2OutOf4;
  uint Guess1OutOf4;
  uint PriceOfTicket;
  uint ExpirationTime; //for eventual refunds only, ~2 weeks after draw announced
}
ledger_t[] public ledger;

//constructor
function TheEthereumLottery() {
  owner = msg.sender;
  ledger.length = 0;
  IndexOfCurrentDraw = 0;
  referral_fee = 90;
}

What does setting the length property of an array do? In most other languages length is a function that return the length of an array.

I have the following code:

struct ledger_t {
  uint8 WinningNum1;
  uint8 WinningNum2;
  uint8 WinningNum3;
  uint8 WinningNum4;
  bytes32 ClosingHash;
  bytes32 OpeningHash;
  mapping(address=>bet_t) bets;
  uint Guess4OutOf4;
  uint Guess3OutOf4;
  uint Guess2OutOf4;
  uint Guess1OutOf4;
  uint PriceOfTicket;
  uint ExpirationTime; //for eventual refunds only, ~2 weeks after draw announced
}
ledger_t[] public ledger;

//constructor
function TheEthereumLottery() {
  owner = msg.sender;
  ledger.length = 0;
  IndexOfCurrentDraw = 0;
  referral_fee = 90;
}

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asked Mar 21, 2017 at 2:27

RFV

setting the length property of array

What does setting the length property of an array do. In most other languages length is a function that return the length of an array.

I have the following code:

struct ledger_t {
  uint8 WinningNum1;
  uint8 WinningNum2;
  uint8 WinningNum3;
  uint8 WinningNum4;
  bytes32 ClosingHash;
  bytes32 OpeningHash;
  mapping(address=>bet_t) bets;
  uint Guess4OutOf4;
  uint Guess3OutOf4;
  uint Guess2OutOf4;
  uint Guess1OutOf4;
  uint PriceOfTicket;
  uint ExpirationTime; //for eventual refunds only, ~2 weeks after draw announced
}
ledger_t[] public ledger;

//constructor
function TheEthereumLottery() {
  owner = msg.sender;
  ledger.length = 0;
  IndexOfCurrentDraw = 0;
  referral_fee = 90;
}

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