Here is an article based on your request:
Set Return Typs @Solana/Web3.js V2: Guide
As a creator working with Solana Web3.js V2, you may have encountered situations when you need to conclude or find the correct type of function return value. In this article we will investigate how to do it.
Understanding the problem
@Solana/Web3.js V2 are used types to define data form and structure. When calling Solana chain features, you usually transmit parameters as a array or object with specific types. However, when the function returns the value, it is not always clear what the return value is.
Basic Types @Solana/Web3.js v2
To understand how to determine the type of return function, first look at some of the main types that can be found in Solana Web3.js V2:
Uint8array: 256 unsigned 8 -bit of healthy numbers
U8: one unsigned 8 -bit integers
Bytes32: 32 byte data encoded as an array of bytes
String: Unicode characters sequence
Bigint ': arbitrary accuracy, decimal number
- Fixed64
: a fixed point 64 -bit value with accuracy up to 18 digits
Return Types are served
To determine the type of return of the function, you need to analyze the signature of the function and all the parameters of the past. Here are some tips:
- Check feature signature : Look at the function name, arguments and type of return.
- Analyze the types of parameters : Check that each argument has a certain type (eg Uint8array, U8, etc.). You can use the Typeof operator or an instance method to check the type of argument.
- Find data type features in the body : If the return value is stored as a byte massif, you may be able to conclude about its size by analyzing how it is encoded.
Example: Conclusion Return Type
Let's take a simple example:
Javascript
CONST IF ITEM = ASYNC (Account: Line) => {{{
// … the logic of installation …
};
`
In this case, the “install” feature occupies the “account” parameter with the “string type”. The return value is kept as a byte array.
To determine its size, we can analyze the function of the function:
`Javascript
CONST IF ITEM = ASYNC (Account: Line) => {{{
// … the logic of installation …
CESS result = wait for installation (account);
console.log (result.length); // prints 24 bytes
};
`
In this case, the return value is a byte array with 24 elements.
Find the refund types
If you are unsure of the type of function or its return values, you can use the following methods:
1
2.
3.
In summary, capture or find the main types of return values @Solana/Web3.js V2 includes the analysis of the feature signature, parameter types and data structures stored as a return. By following these tips and using tools such as type checkers and documentation, you can write a stronger and supervised code Solana.