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278 lines
9.4 KiB
278 lines
9.4 KiB
Running transactions
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====================
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The Run tab is an important section of Remix. It allows you to send
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transactions to the current environment.
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Run Setup
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---------
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The following settings allow you to directly influence the transaction
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execution:
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Environment:
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- `JavaScript VM`: All the transactions will be executed in
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a sandbox blockchain in the browser. This means nothing
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will be persisted and a page reload will restart a new
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blockchain from scratch, the old one will not be saved.
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- `Injected Provider`: Remix will connect to an injected
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web3 provider. `Mist` and `Metamask` are example of
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providers that inject web3, thus can be used with this
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option.
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- `Web3 Provider`: Remix will connect to a remote node. You
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will need to provide the URL address to the selected
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provider: geth, parity or any Ethereum client.
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- Account: the list of accounts associated with the current
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environment (and their associated balances).
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- Gas Limit: the maximum amount of gas that can be set for all the
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transactions created in Remix.
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- Value: the amount of value for the next created transaction (this
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value is always reset to 0 after each transaction execution).
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Initiate Instance
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-----------------
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This section contains the list of compiled contracts and 2 actions:
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- `At Address` assumes the given address is an instance of the
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selected contract. It is then possible to interact with an already
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deployed contract. There's no check at this point, so be careful
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when using this feature, and be sure you trust the contract at that
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address.
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- `Create` send a transaction that deploys the selected contract. When
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the transaction is mined, the newly created instance will be added
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(this might take several seconds). Note that if the `constructor`
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has parameters, you need to specify them.
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Pending Instances
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-----------------
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Validating a transaction take several seconds. During this time, the GUI
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shows it in a pending mode. When transaction is mined the number of
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pending transactions is updated and the transaction is added to the log
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(see ../terminal)
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Using the ABI
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------------
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Using `Deploy` or `At Address` is a classic use case of Remix. It is
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possible though to interact with a contract by using its ABI. The ABI is
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a JSON array which describe its interface.
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To interact with a contract using the ABI, create a new file in Remix
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with extension `*.abi` and copy the ABI content to it. Then in the input
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next to `At Address`, put the Address of the contract you want to
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interact with. Click on `At Address`, a new "connection" with the
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contract will popup below.
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Using the Recorder
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------------------
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The Recorder allows to save a bunch of transactions in a JSON file and
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rerun them later either in the same environment or in another.
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Saving to JSON allows to easily check the transaction list, tweak input
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parameters, change linked library, etc...
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We can find many use cases for the recorder, for instance:
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: - After having coded and tested contracts in a constrained
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environment (like the JavaScript VM), it could be interesting to
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redeploy them easily in a more persisted environment (like a
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Geth node) in order to check whether everything behaves normally
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in a classic environment.
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- Deploying contract does often require more than creating one
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transaction.
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- Working in a dev environment does often require to setup the
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state in a first place.
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Saving a record ends up with the creation of this type of content (see
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below):
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In that specific record, 3 transactions are executed:
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The first corresponds to the deployment of the lib `testLib`.
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The second corresponds to the deployment of the contract `test`, the
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first parameter of the constructor is set to 11. That contract depends
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on a library. The linkage is done using the property `linkReferences`.
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In that case we use the addres of the previously created library :
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`created{1512830014773}`. the number is the id (timestamp) of the
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transaction that leads to the creation of the library.
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The third parameter corresponds to the call to the function `set` of the
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contract `test` (the property to is set to: `created{1512830015080}`) .
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Input parameters are `1` and
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`0xca35b7d915458ef540ade6068dfe2f44e8fa733c`
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all these transactions are created using the value of the accounts
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`account{0}`.
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``` {.sourceCode .none}
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{
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"accounts": {
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"account{0}": "0xca35b7d915458ef540ade6068dfe2f44e8fa733c"
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},
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"linkReferences": {
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"testLib": "created{1512830014773}"
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},
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"transactions": [
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{
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"timestamp": 1512830014773,
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"record": {
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"value": "0",
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"parameters": [],
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"abi": "0xbc36789e7a1e281436464229828f817d6612f7b477d66591ff96a9e064bcc98a",
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"contractName": "testLib",
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"bytecode": "60606040523415600e57600080fd5b60968061001c6000396000f300606060405260043610603f576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff1680636d4ce63c146044575b600080fd5b604a6060565b6040518082815260200191505060405180910390f35b6000610d809050905600a165627a7a7230582022d123b15248b8176151f8d45c2dc132063bcc9bb8d5cd652aea7efae362c8050029",
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"linkReferences": {},
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"type": "constructor",
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"from": "account{0}"
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}
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},
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{
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"timestamp": 1512830015080,
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"record": {
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"value": "100",
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"parameters": [
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11
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],
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"abi": "0xc41589e7559804ea4a2080dad19d876a024ccb05117835447d72ce08c1d020ec",
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"contractName": "test",
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"bytecode": "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__browser/ballot.sol:testLib____________636d4ce63c6000604051602001526040518163ffffffff167c010000000000000000000000000000000000000000000000000000000002815260040160206040518083038186803b151561022e57600080fd5b6102c65a03f4151561023f57600080fd5b505050604051805190509050905600a165627a7a72305820e0b2510bb2890a0334bfe5613d96db3e72442e63b514cdeaee8fc2c6bbd19d3a0029",
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"linkReferences": {
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"browser/ballot.sol": {
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"testLib": [
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{
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"length": 20,
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"start": 511
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}
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]
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}
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},
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"name": "",
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"type": "constructor",
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"from": "account{0}"
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}
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},
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{
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"timestamp": 1512830034180,
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"record": {
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"value": "1000000000000000000",
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"parameters": [
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1,
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"0xca35b7d915458ef540ade6068dfe2f44e8fa733c"
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],
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"to": "created{1512830015080}",
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"abi": "0xc41589e7559804ea4a2080dad19d876a024ccb05117835447d72ce08c1d020ec",
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"name": "set",
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"type": "function",
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"from": "account{0}"
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}
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}
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],
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"abis": {
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"0xbc36789e7a1e281436464229828f817d6612f7b477d66591ff96a9e064bcc98a": [
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{
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"constant": true,
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"inputs": [],
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"name": "get",
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"outputs": [
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{
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"name": "",
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"type": "uint256"
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}
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],
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"payable": false,
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"stateMutability": "view",
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"type": "function"
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}
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],
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"0xc41589e7559804ea4a2080dad19d876a024ccb05117835447d72ce08c1d020ec": [
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{
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"constant": true,
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"inputs": [],
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"name": "getInt",
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"outputs": [
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{
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"name": "",
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"type": "uint256"
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}
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],
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"payable": false,
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"stateMutability": "view",
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"type": "function"
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},
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{
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"constant": true,
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"inputs": [],
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"name": "getFromLib",
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"outputs": [
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{
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"name": "",
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"type": "uint256"
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}
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],
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"payable": false,
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"stateMutability": "view",
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"type": "function"
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},
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{
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"constant": true,
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"inputs": [],
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"name": "getAddress",
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"outputs": [
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{
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"name": "",
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"type": "address"
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}
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],
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"payable": false,
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"stateMutability": "view",
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"type": "function"
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},
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{
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"constant": false,
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"inputs": [
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{
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"name": "_t",
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"type": "uint256"
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},
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{
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"name": "_add",
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"type": "address"
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}
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],
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"name": "set",
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"outputs": [],
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"payable": true,
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"stateMutability": "payable",
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"type": "function"
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},
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{
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"inputs": [
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{
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"name": "_r",
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"type": "uint256"
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}
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],
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"payable": true,
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"stateMutability": "payable",
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"type": "constructor"
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}
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]
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}
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}
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```
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