Write up default methods for the tutorial. #11270
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| @@ -2094,12 +2095,13 @@ fn head<T: Clone>(v: &[T]) -> T { | |||
| } | |||
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| This says that we can call `head` on any type `T` | |||
| as long as that type implements the `Clone` trait. | |||
| The bounded type parameter `T: Clone` says that `head` is polymorphic | |||
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nit: maybe say "can be called with any type T"? I think we want to avoid PL jargon in the tutorial.
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@pcwalton OK, I changed this and a couple other minor things.
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r? @pcwalton |
| types to be exactly as it is for `int`, above: | ||
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| ~~~~ | ||
| impl Printable for f32 { |
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# trait Printable { fn print(&self); } is missing
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Jan 6, 2014
I've been wanting to explain default methods in the tutorial for ages. While I was at it I tried to clarify some other parts of the traits section. I'm sure this could be improved further; suggestions welcome.
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I've been wanting to explain default methods in the tutorial for ages. While I was at it I tried to clarify some other parts of the traits section. I'm sure this could be improved further; suggestions welcome.