52 lines
1.1 KiB
Solidity
52 lines
1.1 KiB
Solidity
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// SPDX-License-Identifier: GPL-3.0
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pragma solidity >=0.8.2 <0.9.0;
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/**
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* @title Storage
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* @dev Store & retrieve value in a variable
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* @custom:dev-run-script ./scripts/deploy_with_ethers.ts
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*/
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contract Example {
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uint256 number;
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struct exampleStruct {
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int val1;
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int val2;
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string val3;
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}
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event Basic(uint indexed firstArg, string secondArg);
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event Struct(uint indexed firstArg, exampleStruct secondArg);
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/**
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* @dev Store value in variable
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* @param num value to store
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*/
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function mutateStorageVal(uint256 num) public {
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number = num;
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}
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/**
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* @dev Return value
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* @return value of 'number'
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*/
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function retrieveStorageVal() public view returns (uint256){
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return number;
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}
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function emitEvent() public {
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emit Basic(123, "event");
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}
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function emitTwoEvents() public {
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emit Basic(123, "event1");
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emit Basic(123, "event2");
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}
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function emitEventsDiffTypes() public {
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emit Basic(123, "event1");
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emit Struct(123, exampleStruct({val1: 1, val2: 2, val3: "string"}));
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}
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}
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