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I learned about the ** operator for array-repeat, and I love it. I have a struct that contains a 2-d array of inner structs, like const D1 = 30; const D2 = 40; const Inner = struct { .a: u32, ....
#1: Initial revision
by
aghast
·
2022-10-02T02:58:08Z (about 2 years ago)
How do I (compactly) initialize a 2-d array of structs with the same value?
I learned about the `**` operator for array-repeat, and I love it.
I have a struct that contains a 2-d array of inner structs, like
const D1 = 30;
const D2 = 40;
const Inner = struct { .a: u32, .b: bool };
const Outer = struct {
// ...
.array: [D1][D2]Inner,
// ...
};
I would like to "just initialize" the struct in the `init()` function:
pub fn init() Self {
return Self{
.array = FIXME("What goes here?"),
};
}
For a 1-d array, I could do something like:
// See line 63 of
// https://ziglang.org/documentation/master/#Arrays
.array_1d = [_]Inner{.a='1', .b=true} ** D2,
But how do I write the expression for a 2-d array?
.array = [_][_]Inner{...} ** D2 ** D1, // didn't work