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| author | Manish Goregaokar <manishsmail@gmail.com> | 2018-05-07 09:26:03 -0700 |
|---|---|---|
| committer | Manish Goregaokar <manishsmail@gmail.com> | 2018-05-07 10:26:28 -0700 |
| commit | 6e49c837f614a8670a5773428b4934eb280bca61 (patch) | |
| tree | 4333da5fbaeb793142ce421a7c9ffdf486b24c70 | |
| parent | 1abed9cebf27f1f68e8711cb15ba9c2587b4da68 (diff) | |
| download | rust-6e49c837f614a8670a5773428b4934eb280bca61.tar.gz rust-6e49c837f614a8670a5773428b4934eb280bca61.zip | |
Add explanation for #[must_use] on Debug builders
| -rw-r--r-- | src/libcore/fmt/builders.rs | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/libcore/fmt/builders.rs b/src/libcore/fmt/builders.rs index a1f4c6995da..e8ea2e743da 100644 --- a/src/libcore/fmt/builders.rs +++ b/src/libcore/fmt/builders.rs @@ -84,7 +84,7 @@ impl<'a> fmt::Write for PadAdapter<'a> { /// // prints "Foo { bar: 10, baz: "Hello World" }" /// println!("{:?}", Foo { bar: 10, baz: "Hello World".to_string() }); /// ``` -#[must_use] +#[must_use = "must eventually call `finish()` on Debug builders"] #[allow(missing_debug_implementations)] #[stable(feature = "debug_builders", since = "1.2.0")] pub struct DebugStruct<'a, 'b: 'a> { @@ -181,7 +181,7 @@ impl<'a, 'b: 'a> DebugStruct<'a, 'b> { /// // prints "Foo(10, "Hello World")" /// println!("{:?}", Foo(10, "Hello World".to_string())); /// ``` -#[must_use] +#[must_use = "must eventually call `finish()` on Debug builders"] #[allow(missing_debug_implementations)] #[stable(feature = "debug_builders", since = "1.2.0")] pub struct DebugTuple<'a, 'b: 'a> { @@ -319,7 +319,7 @@ impl<'a, 'b: 'a> DebugInner<'a, 'b> { /// // prints "{10, 11}" /// println!("{:?}", Foo(vec![10, 11])); /// ``` -#[must_use] +#[must_use = "must eventually call `finish()` on Debug builders"] #[allow(missing_debug_implementations)] #[stable(feature = "debug_builders", since = "1.2.0")] pub struct DebugSet<'a, 'b: 'a> { @@ -390,7 +390,7 @@ impl<'a, 'b: 'a> DebugSet<'a, 'b> { /// // prints "[10, 11]" /// println!("{:?}", Foo(vec![10, 11])); /// ``` -#[must_use] +#[must_use = "must eventually call `finish()` on Debug builders"] #[allow(missing_debug_implementations)] #[stable(feature = "debug_builders", since = "1.2.0")] pub struct DebugList<'a, 'b: 'a> { @@ -461,7 +461,7 @@ impl<'a, 'b: 'a> DebugList<'a, 'b> { /// // prints "{"A": 10, "B": 11}" /// println!("{:?}", Foo(vec![("A".to_string(), 10), ("B".to_string(), 11)])); /// ``` -#[must_use] +#[must_use = "must eventually call `finish()` on Debug builders"] #[allow(missing_debug_implementations)] #[stable(feature = "debug_builders", since = "1.2.0")] pub struct DebugMap<'a, 'b: 'a> { |