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r[type.inferred]

Inferred type

r[type.inferred.syntax]

InferredType -> `_`

r[type.inferred.intro] The inferred type asks the compiler to infer the type if possible based on the surrounding information available.

[!EXAMPLE] The inferred type is often used in generic arguments:
let x: Vec<_> = (0..10).collect();

r[type.inferred.constraint] The inferred type cannot be used in item signatures.