union(enum) initialize to void | Zig Programming Language | Page 1

void lion Mar 17, 2024, 2:54 PM

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I currently have one union(enum) like:

const Node = union(enum) {
    none,
    ...
};

I try initializing it to "none":

const default_node = Node { .none };

and gets this error:

type 'main.Node' does not support array initialization syntax

(but it works if I change the type to u8 and init with 0 ? how i'm supposed to init a void field?)

barren snow Mar 17, 2024, 2:58 PM

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in a tagged union, if you don't annotate a member's type explicitly, it'll be of type void

void lion Mar 17, 2024, 2:58 PM

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yes right

barren snow Mar 17, 2024, 2:58 PM

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you initialise a void value with {} (or void{} but that might get removed)

void lion Mar 17, 2024, 2:58 PM

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just .none = {} ?

barren snow Mar 17, 2024, 2:59 PM

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yeah, that would be the prototypical way to initialise it

void lion Mar 17, 2024, 2:59 PM

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oh correct

#

thank you !

#union(enum) initialize to void