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Array.sol
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Array.sol
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
// Array - dynamic or fixed size
// Initialization
// Insert (push), get, update, delete, pop, length
// Creating array in Memory
// Returning array from function
contract Array {
uint[] public nums = [1, 2, 3];
uint[3] public numsFixed = [4, 5, 6];
function examples() external {
nums.push(4); // [1, 2, 3, 4]
uint x = nums[1];
nums[2] = 777; // [1, 2, 777, 4]
delete nums[1]; // [1, 0, 777, 4]
nums.pop(); // [1, 0, 777]
uint len = nums.length;
// create array in memory
uint[] memory a = new uint[](5);
a[1] = 123;
}
function returnArray() external view returns (uint[] memory) {
return nums;
}
}