diff options
| -rw-r--r-- | src/libcore/fmt/mod.rs | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/src/libcore/fmt/mod.rs b/src/libcore/fmt/mod.rs index 29750a0a496..e2b12b1c20d 100644 --- a/src/libcore/fmt/mod.rs +++ b/src/libcore/fmt/mod.rs @@ -692,11 +692,7 @@ impl<'a> Formatter<'a> { /// /// impl fmt::Debug for Foo { /// fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { - /// let mut builder = fmt.debug_list(); - /// for i in &self.0 { - /// builder = builder.entry(i); - /// } - /// builder.finish() + /// self.0.iter().fold(fmt.debug_list(), |b, e| b.entry(e)).finish() /// } /// } /// @@ -722,11 +718,7 @@ impl<'a> Formatter<'a> { /// /// impl fmt::Debug for Foo { /// fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { - /// let mut builder = fmt.debug_set(); - /// for i in &self.0 { - /// builder = builder.entry(i); - /// } - /// builder.finish() + /// self.0.iter().fold(fmt.debug_set(), |b, e| b.entry(e)).finish() /// } /// } /// @@ -752,11 +744,7 @@ impl<'a> Formatter<'a> { /// /// impl fmt::Debug for Foo { /// fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { - /// let mut builder = fmt.debug_map(); - /// for &(ref key, ref value) in &self.0 { - /// builder = builder.entry(key, value); - /// } - /// builder.finish() + /// self.0.iter().fold(fmt.debug_map(), |b, (k, v)| b.entry(k, v)).finish() /// } /// } /// |