From: Ralf Jung Date: Tue, 7 Jul 2015 11:27:41 +0000 (+0200) Subject: part 08: new exercise, fix numbering X-Git-Url: https://git.ralfj.de/rust-101.git/commitdiff_plain/9ae2b045dd1772c02f7013953dd4108a99bd2c74?ds=sidebyside;hp=-c part 08: new exercise, fix numbering --- 9ae2b045dd1772c02f7013953dd4108a99bd2c74 diff --git a/src/part08.rs b/src/part08.rs index cacff46..630da42 100644 --- a/src/part08.rs +++ b/src/part08.rs @@ -101,6 +101,8 @@ impl<'a, 'b> ops::Add<&'a BigInt> for &'b BigInt { } } +// **Exercise 08.4**: Implement the two missing combinations of arguments for `Add`. You should not have to duplicate the implementation. + // ## Modules //@ As you learned, tests can be written right in the middle of your development in Rust. However, it is //@ considered good style to bundle all tests together. This is particularly useful in cases where @@ -117,7 +119,7 @@ mod tests { let b2 = BigInt::from_vec(vec![0, 1]); assert_eq!(&b1 + &b2, BigInt::from_vec(vec![1 << 32, 1])); - // **Exercise 08.4**: Add some more cases to this test. + // **Exercise 08.5**: Add some more cases to this test. } } //@ As already mentioned, outside of the module, only those items declared public with `pub` may be used. Submodules can access @@ -140,7 +142,7 @@ mod tests { //@ from other files. This ensures that the directory structure mirrors the structure of the modules, with `mod.rs`, `lib.rs` //@ and `main.rs` representing a directory or crate itself (similar to, e.g., `__init__.py` in Python). -// **Exercise 08.4**: Write a subtraction function, and testcases for it. Decide for yourself how you want to handle negative results. +// **Exercise 08.6**: Write a subtraction function, and testcases for it. Decide for yourself how you want to handle negative results. // For example, you may want to return an `Option`, to panic, or to return `0`. //@ [index](main.html) | [previous](part07.html) | [next](main.html) diff --git a/workspace/src/part08.rs b/workspace/src/part08.rs index 5a5f792..d03934a 100644 --- a/workspace/src/part08.rs +++ b/workspace/src/part08.rs @@ -69,6 +69,8 @@ impl<'a, 'b> ops::Add<&'a BigInt> for &'b BigInt { } } +// **Exercise 08.4**: Implement the two missing combinations of arguments for `Add`. You should not have to duplicate the implementation. + // ## Modules // Rust calls a bunch of definitions that are grouped together a *module*. You can put the tests in a submodule as follows. @@ -80,10 +82,10 @@ mod tests { let b2 = BigInt::from_vec(vec![0, 1]); assert_eq!(&b1 + &b2, BigInt::from_vec(vec![1 << 32, 1])); - // **Exercise 08.4**: Add some more cases to this test. + // **Exercise 08.5**: Add some more cases to this test. } } -// **Exercise 08.4**: Write a subtraction function, and testcases for it. Decide for yourself how you want to handle negative results. +// **Exercise 08.6**: Write a subtraction function, and testcases for it. Decide for yourself how you want to handle negative results. // For example, you may want to return an `Option`, to panic, or to return `0`.