Add destructure syntax for array and struct #24071
Description
Describe the feature
It is hoped to provide a syntax for arrays to extract certain elements into several variables at one time, similar to the result assignment of a multi-return value function. For example, one,two=arr. At the same time, a syntax can be provided to extract certain fields in a struct variable to corresponding variables. For example, {a,b}=obj.
Use Case
fn main(){
arr:=[1,2,3];
a,b,_ := arr; // destructure array
obj:=Foo{
x: 1,
y: 2,
}
{x,y} := obj; // destructure struct
println(x,y);
}
struct Foo {
x int
y int
}
Proposed Solution
No response
Other Information
No response
Acknowledgements
- I may be able to implement this feature request
- This feature might incur a breaking change
Version used
V 0.4.10
Environment details (OS name and version, etc.)
| V full version | V 0.4.10 54c10ec.54c10ec |
|---|---|
| OS | windows, Microsoft Windows 11 Pro 22631 64-bit |
| Processor | 16 cpus, 64bit, little endian, AMD Ryzen 7 7840H with Radeon 780M Graphics |
| Memory | 6.13GB/27.69GB |
| V executable | D:\Programs\v\v.exe |
| V last modified time | 2025-03-24 06:08:50 |
| V home dir | OK, value: D:\Programs\v |
| VMODULES | OK, value: C:\Users\vioch.vmodules |
| VTMP | OK, value: C:\Users\vioch\AppData\Local\Temp\v_0 |
| Current working dir | OK, value: C:\Users\vioch |
| Git version | git version 2.45.1.windows.1 |
| V git status | Error: fatal: not a git repository (or any of the parent directories): .git |
| .git/config present | false |
| cc version | clang version 17.0.4 (https://github.com/llvm/llvm-project.git 309d55140c46384b6de7a7573206cbeba3f7077f) |
| gcc version | clang version 17.0.4 (https://github.com/llvm/llvm-project.git 309d55140c46384b6de7a7573206cbeba3f7077f) |
| clang version | clang version 17.0.4 (https://github.com/llvm/llvm-project.git 309d55140c46384b6de7a7573206cbeba3f7077f) |
| msvc version | N/A |
| tcc version | tcc version 0.9.27 (x86_64 Windows) |
| tcc git status | N/A |
| emcc version | N/A |
| glibc version | N/A |
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