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docs: structs: custom default values

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Alexander Medvednikov 2020-05-16 15:17:27 +02:00 committed by GitHub
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@ -631,7 +631,8 @@ println(p.x)
The type of `p` is `&Point`. It's a reference to `Point`. The type of `p` is `&Point`. It's a reference to `Point`.
References are similar to Go pointers and C++ references. References are similar to Go pointers and C++ references.
V doesn't allow subclassing, but it supports embedded structs: <p>&nbsp;</p>
```v ```v
// TODO: this will be implemented later // TODO: this will be implemented later
@ -647,6 +648,17 @@ button.set_pos(x, y)
button.widget.set_pos(x,y) button.widget.set_pos(x,y)
``` ```
V doesn't allow subclassing, but it supports embedded structs.
<p>&nbsp;</p>
```v
struct Foo {
pos int = -1
x int // x is 0 by default
}
```
All struct fields are zeroed by default during the creation of the struct. But it's also possible to define custom default values.
## Access modifiers ## Access modifiers
Struct fields are private and immutable by default (making structs immutable as well). Struct fields are private and immutable by default (making structs immutable as well).