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Update codes of ch2

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This commit is contained in:
Aaran Xu 2022-02-02 16:24:47 +08:00
parent bb019b48b0
commit ea43bbd056
43 changed files with 57 additions and 50 deletions
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2
listings/ch03-common-programming-concepts/listing-03-01/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "functions" name = "functions"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/listing-03-02/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "branches" name = "branches"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/listing-03-03/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "loops" name = "loops"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/listing-03-04/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "loops" name = "loops"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/listing-03-05/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "loops" name = "loops"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "variables" name = "variables"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-02-adding-mut/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "variables" name = "variables"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-03-shadowing/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "variables" name = "variables"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-04-shadowing-can-change-types/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "variables" name = "variables"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "variables" name = "variables"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/output.txt
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@ -3,6 +3,8 @@ $ cargo run
error[E0308]: mismatched types error[E0308]: mismatched types
--> src/main.rs:3:14 --> src/main.rs:3:14
| |
2 | let mut spaces = " ";
| ----- expected due to this value
3 | spaces = spaces.len(); 3 | spaces = spaces.len();
| ^^^^^^^^^^^^ expected `&str`, found `usize` | ^^^^^^^^^^^^ expected `&str`, found `usize`

2
listings/ch03-common-programming-concepts/no-listing-06-floating-point/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "floating-point" name = "floating-point"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-07-numeric-operations/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "numeric-operations" name = "numeric-operations"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-08-boolean/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "boolean" name = "boolean"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-09-char/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "char" name = "char"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-10-tuples/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "tuples" name = "tuples"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-11-destructuring-tuples/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "tuples" name = "tuples"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-12-tuple-indexing/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "tuples" name = "tuples"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-13-arrays/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "arrays" name = "arrays"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-14-array-indexing/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "arrays" name = "arrays"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "arrays" name = "arrays"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-16-functions/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "functions" name = "functions"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-17-functions-with-parameters/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "functions" name = "functions"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-18-functions-with-multiple-parameters/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "functions" name = "functions"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "functions" name = "functions"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

23
listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/output.txt
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@ -1,5 +1,13 @@
$ cargo run $ cargo run
Compiling functions v0.1.0 (file:///projects/functions) Compiling functions v0.1.0 (file:///projects/functions)
error: expected expression, found statement (`let`)
--> src/main.rs:2:14
|
2 | let x = (let y = 6);
| ^^^^^^^^^
|
= note: variable declaration using `let` is a statement
error[E0658]: `let` expressions in this position are experimental error[E0658]: `let` expressions in this position are experimental
--> src/main.rs:2:14 --> src/main.rs:2:14
| |
@ -9,21 +17,18 @@ error[E0658]: `let` expressions in this position are experimental
= note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
= help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>` = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
error: expected expression, found statement (`let`)
--> src/main.rs:2:14
|
2 | let x = (let y = 6);
| ^^^^^^^^^
|
= note: variable declaration using `let` is a statement
warning: unnecessary parentheses around assigned value warning: unnecessary parentheses around assigned value
--> src/main.rs:2:13 --> src/main.rs:2:13
| |
2 | let x = (let y = 6); 2 | let x = (let y = 6);
| ^^^^^^^^^^^ help: remove these parentheses | ^ ^
| |
= note: `#[warn(unused_parens)]` on by default = note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
|
2 - let x = (let y = 6);
2 + let x = let y = 6;
|
For more information about this error, try `rustc --explain E0658`. For more information about this error, try `rustc --explain E0658`.
warning: `functions` (bin "functions") generated 1 warning warning: `functions` (bin "functions") generated 1 warning

2
listings/ch03-common-programming-concepts/no-listing-20-blocks-are-expressions/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "functions" name = "functions"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-21-function-return-values/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "functions" name = "functions"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-22-function-parameter-and-return/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "functions" name = "functions"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "functions" name = "functions"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-24-comments-end-of-line/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "comments" name = "comments"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-25-comments-above-line/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "comments" name = "comments"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-26-if-true/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "branches" name = "branches"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-27-if-false/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "branches" name = "branches"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "branches" name = "branches"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-29-if-not-equal-0/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "branches" name = "branches"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-30-else-if/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "branches" name = "branches"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "branches" name = "branches"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-32-5-loop-labels/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "loops" name = "loops"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-32-loop/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "loops" name = "loops"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-33-return-value-from-loop/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "loops" name = "loops"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/no-listing-34-for-range/Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "loops" name = "loops"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
[dependencies] [dependencies]

2
listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/Cargo.toml
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@ -1,7 +1,7 @@
[package] [package]
name = "no_type_annotations" name = "no_type_annotations"
version = "0.1.0" version = "0.1.0"
edition = "2018" edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html