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= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
+ = note: the matched value is of type `i32`
help: you might want to use `if let` to ignore the variant that isn't matched
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LL | let x: [i32; { if let 0 = 0 { /* */ } 0 }] = [];