nonce | returns unique and ever increasing timestamps | Runtime Evironment library
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kandi X-RAY | nonce Summary
returns unique and ever increasing timestamps.
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QUESTION
I am trying to deploy my SimpleStorage.sol contract to a ganache local chain by making a transaction using python. It seems to have trouble connecting to the chain.
...ANSWER
Answered 2022-Jan-17 at 18:17Had this issue myself, apparently it's some sort of Ganache CLI error but the simplest fix I could find was to change the network id in Ganache through settings>server to 1337. It restarts the session so you'd then need to change the address and private key variable.
If it's the same tutorial I'm doing, you're likely to come unstuck after this... the code for transaction should be:
QUESTION
I'm a senior studying computer science and I've never seen behavior this strange before. I'm sure there is just some C complexity that I'm not understanding but I'm completely lost right now.
I’ve made the following function:
Declaration
...ANSWER
Answered 2022-Mar-09 at 03:04opcode has type int which is most likely 4 bytes, however you're only copying a single byte into it:
QUESTION
There are two servers that I'm testing on, and on one server, the bot works, but the bot does not work on another server.
However, the ping command works
The command that makes the bot crash on only one server, while it works on another server
...ANSWER
Answered 2022-Mar-08 at 07:35This means that your bot is missing permissions to (presumably) send messages on that server.
You can prevent it from crashing by adding a .catch statement after sending the message like this:
QUESTION
While trying to set up a basic self-hosted unit testing environment (and CI) that tests this Chainlink VRF random number contract, I am experiencing slight difficulties in how to simulate any relevant blockchains/testnets locally.
For example, I found this repository that tests Chainlinks VRF. However, for default deployment it suggests/requires a free KOVAN_RPC_URL e.g. from Infura's site and even for "local deployment" it suggests/requires a free MAINNET_RPC_URL from e.g. Alchemy's site.
I adopted a unit test environment from the waffle framework which is described as:
Filestructure ...ANSWER
Answered 2021-Sep-09 at 04:35to test locally you need to make use of mocks which can simulate having an oracle network. Because you're working locally, a Chainlink node doesn't know about your local blockchain, so you can't actually do proper VRF requests. Note you can try deploy a local Chainlink node and a local blockchain and have them talk, but it isn't fully supported yet so you may get mixed results. Anyway, as per the hardhat starter kit that you linked, you can set the defaultNetwork to be 'hardhat' in the hardhat.config.js file, then when you deploy and run the integration tests (yarn test-integration), it will use mocks to mock up the VRF node, and to test the requesting of a random number. See the test here, and the mock contracts and linktoken get deployed here
QUESTION
I am trying to understand the syntax of C c = new C();
I read the new keyword deploys, initializes state variables, runs the constructor, sets nonce to one, and returns address of new instance.
I read that a state variable a has a 0-ary public getter function a() that returns the value of a.
Questions:
- What "is" the getter function of a contract?
- Why does
newact on the getter function? - In
C c = new C();why do we need the firstCto define the variable?
ANSWER
Answered 2022-Mar-05 at 11:15What "is" the getter function of a contract?
Why does new act on the getter function?
You can create a pointer to an already deployed contract by omitting the new keyword. Mind that the address is not a constructor param - it's an address of the external contract.
QUESTION
I'm developping an app using Flutter and Firebase Authentication.
I try to add the Apple Sign In in my Login page.
I'm following this tutorial https://dev.to/offlineprogrammer/flutter-firebase-authentication-apple-sign-in-1m64.
It works, Apple open the component in which I can log into
But when I want to insert my Password, it loads infinitly. If I put a wrong password, it failed immediately
I havn't any log, my code is stuck at
...ANSWER
Answered 2021-Oct-27 at 12:00its a late answer, but if you you still facing it or anyone comes in the future:
Most likely you are using an iOS emulator which won't login, no matter how many times you tried to login and checked the password thousand time, I been there too... you need to use a real iOS.
And another advice, if you tried to send notifications, it won't either work on emulator, which is very clear in the documentation, but still some people miss it.
QUESTION
There has been other questions on the subject, but nothing seems working for me.
I have a functional CURL, but I want to translate to JS (with Node).
ANSWER
Answered 2022-Feb-19 at 13:04You need to specify that it's a digest:
QUESTION
When querying archival node for transactions with EXPERIMENTAL_tx_status method, some transactions have no receipts while having receipts_outcome. How is that possible, and how is that transaction different from others?
If I understand correctly, receipts_outcome are the results of applying receipts. According to explorer, this transaction has Convert Transaction To Receipt part, so there should be some receipts generated.
According to documentation
A Receipt is the only actionable object in the system. When we talk about "processing a transaction" on the NEAR platform, this eventually means "applying receipts" at some point.
A good mental model is to think of a Receipt as a paid message to be executed at the destination (receiver). And a Transaction is an externally issued request to create the Receipt (there is a 1 to 1 relationship).
My query
...ANSWER
Answered 2022-Feb-14 at 13:11TL;DR the receipt is a local receipt
The transaction from your example is a simple AddKey action where the sender is the receiver (remember this, it's important)
- "Execute" transaction (means to convert the transaction into a Receipt)
- Apply the Receipts
As the result of the conversion of the transaction into a receipt is your transaction_outcome
QUESTION
What are the list of HTTP response status codes retried by default and how many times, by the Python Requests. How can I change the number of retries? I couldn't find any documentation for it.
I tried below code and there were two retries on 401 status code.
ANSWER
Answered 2022-Feb-05 at 08:40It's not obviously to find. You have to know requests is not the package that manage the connection, urllib3 does.
In the source code of HTTPAdapter (use it when you want more control on requests), the docstring on max_retries parameter said:
If you need granular control over the conditions under which we retry a request, import urllib3's
Retryclass and pass that instead
Now you can refer to the documentation of urllib3 for Retry class.
Read especially status_forcelist parameter and RETRY_AFTER_STATUS_CODES (default: frozenset({413, 429, 503}))
Update
QUESTION
$callbackUrl = urlencode(self::CALLBACK_URL);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"https://api.twitter.com/oauth/request_token");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, [
'oauth_callback' => $callbackUrl,
'oauth_consumer_key' => self::TWITTER_API_KEY
]);
$timestamp = date("U"); // UTC UNIX time
$oauth_nonce = preg_replace( '/[\W]/', '', base64_encode($timestamp));
$headers = [
"Authorization: OAuth oauth_consumer_key=\"".self::TWITTER_API_KEY."\"",
"oauth_nonce: \"$oauth_nonce\"",
"oauth_signature: \"oauth_signature\"",
"oauth_signature_method: \"HMAC-SHA1\"",
"oauth_timestamp: \"$timestamp\"",
"oauth_version: \"1.0\"",
];
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_setopt($ch, CURLOPT_STDERR, $fp);
curl_setopt($ch, CURLINFO_HEADER_OUT , true);
$curlResult = curl_exec($ch);
if (curl_errno($ch)) {
echo 'Curl Request Error:' . curl_error($ch);
throw new CHttpException(404,'ERROR');
}
curl_close ($ch);
ANSWER
Answered 2022-Jan-26 at 14:28As per documentation, Authorization header should contains all the data. Your Authorization header contains only OAuth oauth_consumer_key.
Your actual header (bad format, because , for example, 'oauth' is an entry of the headers, but should be a property of Authorization - see below).
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