solana | Scale Blockchain for fast secure | Blockchain library
kandi X-RAY | solana Summary
kandi X-RAY | solana Summary
Web-Scale Blockchain for fast, secure, scalable, decentralized apps and marketplaces.
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Trending Discussions on solana
QUESTION
I have a pandas dataframe that has a column like this :
...ANSWER
Answered 2022-Apr-07 at 12:21Use Series.str.get
and compare in boolean indexing
:
QUESTION
I ran:
curl https://release.solana.com/v1.8.3/solana-install-init-x86_64-pc-windows-msvc.exe --output C:\solana-install-tmp\solana-install-init.exe --create-dirs
In my Windows command prompt and it showed up like this:
It seemed like it installed - so then I did solana --version
and this is what happened:
'solana' is not recognized as an internal or external command, operable program or batch file.
I ran solana --version
in Powershell, Git Bash, VS Code Terminal, and Command Prompt and it gives the same output.
How do I install Solana?
Thank you!
...ANSWER
Answered 2021-Nov-16 at 04:15QUESTION
I'm trying to validate that the input text I get from a user is a valid Solana address.
According to the web3.js documentation, the method .isOnCurve() does that:
https://solana-labs.github.io/solana-web3.js/classes/PublicKey.html#isOnCurve
I've managed to make it work with this code:
...ANSWER
Answered 2022-Feb-21 at 04:02To validate a Solana public key may be a wallet address, you should both use isOnCurve()
and the PublicKey
constructor like you are doing.
The error thrown makes sense. If the address is not a public key, it should not be able to be instantiated.
Perhaps there could be another function made native to @solana/web3.js that takes care of validating wallet addresses for you in the future.
QUESTION
I am working with Solana Blockchain in JavaScript.
I have the following key string address that I want to decode or convert to BASE58 to UINT8 Decoder. How can I achieve that in JavaScript or even via jQuery?
...ANSWER
Answered 2021-Oct-12 at 09:35All credits goes to the author of this simple lib which you can find here https://gist.github.com/diafygi/90a3e80ca1c2793220e5/
QUESTION
This is my situation:
I have created a wallet
solana-keygen new
I have created my own custom SPL Token
spl-token create-token
Then I created an Account for this SPL Token
spl-token create-account
The SPL token is now in my wallet A
In the Solana Program, I would like to programmatically transfer the custom SPL token from Wallet A to Alice(user) wallet when certain conditions are met (for example, when Alice answered a quiz correctly, she will be awarded some custom SPL token).
How do I authorise the Solana Program to deduct from Wallet A (which I had created) and transfer the tokens to Alice wallet?
Please advise me how to go about doing this. Really appreciate this.
...ANSWER
Answered 2022-Mar-10 at 16:02To transfer an SPL token within a program, your best option is to have wallet A owned by a program-derived address, and then your program can transfer the tokens from wallet A based on any logic it wants.
So first, transfer the ownership to your program-derived address:
QUESTION
I am trying to write a script to pull NFTs by candy machine id, but it is either failing or returning an empty array each time.
I am using the genesysgo mainnet rpc.
Here is the relevant code.
...ANSWER
Answered 2022-Mar-07 at 08:30You are probably using the wrong CMID. Find one of your NFTs on solscan and use the first verified creator ID in the metadata as your CMID. (as seen below).
This would explain why the ID also returns an empty array on the magic eden and pentacles sites.
This address is not the same as the CMID in your .cache file.
QUESTION
Uncaught (in promise) WalletSignTransactionError: Transaction recentBlockhash required
at PhantomWalletAdapter.signTransaction (adapter.ts:215:1)
at async WalletProvider.tsx:247:1
at async mintNFT (luckoo.tsx:100:1)
...ANSWER
Answered 2022-Mar-04 at 14:48You need to provide a recentBlockhash
in your transaction in order for it to be signed. Most likely, you need to fetch a blockhash and add it before signing the transaction using getLatestBlockhash
, ie:
QUESTION
I am trying to understand the solana/example-helloworld
by re-writing the rust lib myself. I have done this and from the package.json file, to generate the .so
file, following is what is run:
ANSWER
Answered 2022-Feb-28 at 11:09.so file are signifies solana files, right?
so
stand for shared object, also known as a dynamically relocatable library or dylib
in Cargo.toml.
What do we mean by cargo build-bpf?
BPF is a virtual machine inside the kernel, so this should instruct cargo to build for that target.
Is there any reason, why 2021 edition didn't work for the solana example?
I don't know, but I suspect it's a simple fix.
Finally, why does the above command not output my .so file?
Could it be that you are missing the lib section in Cargo.toml:
QUESTION
I am trying to run anchor build and am receiving the following response:
...ANSWER
Answered 2022-Jan-13 at 17:27It looks like your solana install is quite out of date. I would install either 1.8.11
or just run solana-install update
QUESTION
I'm building a Solana program to manage payments to multiple accounts, however the compiler fails whenever a .send()
call is made within a loop. For example, the following code compiles just fine:
ANSWER
Answered 2022-Feb-25 at 18:36This is an issue in solang v0.1.9. It should compile fine with solang latest main.
We should be release solang v0.1.10 shortly.
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Vulnerabilities
No vulnerabilities reported
Install solana
Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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