如何在实体中将多维数组中的元素推送到特定坐标？

Question

我有一个这样的数组：

    Animal[3][2][] animalArray.

我有了一个新的元素后"dog"，如何把它推到like

的某个地方

    Animal[2][1][]?

我试过了

    animalArray[2][1].push(dog);

它总是给我错误。

下面是有问题的代码：

pragma solidity ^0.4.0;
contract Zootest {

struct Zoo {
    uint state;
    Animal[][2][3] animalarray;
    uint price;
}

 struct Animal {
    uint quantity;
    address Address;
}

mapping (uint => Zoo) zoo;

function openZoo (uint index) {
    Zoo memory newZoo = Zoo({
        state: 1,
        price: 0,
        animalarray: new Animal[][2][3](0)
    });
    zoo[index] = newZoo;
}

function enterZoo (uint index, uint x, uint y, uint quantity) public {
    Animal memory newAnimal = Animal({
        Address:msg.sender,
        quantity:quantity
    }); 
    zoo[index].price = zoo[index].price+msg.value;
    zoo[index].animalarray[x][y].push(newAnimal);
}

}

Answer 1

也许您打算这样声明数组：

Animal[][2][3] animalArray;

来自https://solidity.readthedocs.io/en/v0.4.24/types.html#arrays（我强调）：

An array of fixed size k and element type T is written as T[k], an array of dynamic size as T[]. As an example, an array of 5 dynamic arrays of uint is uint[][5] (note that the notation is reversed when compared to some other languages). To access the second uint in the third dynamic array, you use x[2][1] (indices are zero-based and access works in the opposite way of the declaration, i.e. x[2] shaves off one level in the type from the right).

如何在实体中将多维数组中的元素推送到特定坐标？

How to push element in multiple dimension array at certain coordinate in solidity?

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