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This commit is contained in:
Aaran Xu 2022-01-30 12:12:14 +08:00
parent f031cd5948
commit 4edc5b8de3
2 changed files with 27 additions and 7 deletions
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31
listings/ch02-guessing-game-tutorial/listing-02-04/output.txt
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@ -16,9 +16,30 @@ error[E0308]: mismatched types
= note: expected reference `&String`
found reference `&{integer}`
error: aborting due to previous error
error[E0283]: type annotations needed for `{integer}`
--> src/main.rs:8:44
|
8 | let secret_number = rand::thread_rng().gen_range(1..101);
| ------------- ^^^^^^^^^ cannot infer type for type `{integer}`
| |
| consider giving `secret_number` a type
|
= note: multiple `impl`s satisfying `{integer}: SampleUniform` found in the `rand` crate:
- impl SampleUniform for i128;
- impl SampleUniform for i16;
- impl SampleUniform for i32;
- impl SampleUniform for i64;
and 8 more
note: required by a bound in `gen_range`
--> /Users/carolnichols/.cargo/registry/src/github.com-1ecc6299db9ec823/rand-0.8.3/src/rng.rs:129:12
|
129 | T: SampleUniform,
| ^^^^^^^^^^^^^ required by this bound in `gen_range`
help: consider specifying the type arguments in the function call
|
8 | let secret_number = rand::thread_rng().gen_range::<T, R>(1..101);
| ++++++++
For more information about this error, try `rustc --explain E0308`.
error: could not compile `guessing_game`
To learn more, run the command again with --verbose.
Some errors have detailed explanations: E0283, E0308.
For more information about an error, try `rustc --explain E0283`.
error: could not compile `guessing_game` due to 2 previous errors

3
listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/output.txt
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@ -9,6 +9,5 @@ warning: unused `Result` that must be used
= note: `#[warn(unused_must_use)]` on by default
= note: this `Result` may be an `Err` variant, which should be handled
warning: 1 warning emitted
warning: `guessing_game` (bin "guessing_game") generated 1 warning
Finished dev [unoptimized + debuginfo] target(s) in 0.59s