Clarification of Slice, Vector and Array

Especially in the tutorial beginners should not be confused with
wrong terminology. It helps to know the right names for things
when you want to find something in the documentation.
This commit is contained in:
moonglum 2014-05-10 17:16:47 -07:00
parent 1001635dc1
commit 1895ad269c

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@ -2385,7 +2385,7 @@ fn print_all<T: Printable>(printable_things: ~[T]) {
Declaring `T` as conforming to the `Printable` trait (as we earlier
did with `Clone`) makes it possible to call methods from that trait
on values of type `T` inside the function. It will also cause a
compile-time error when anyone tries to call `print_all` on an array
compile-time error when anyone tries to call `print_all` on a vector
whose element type does not have a `Printable` implementation.
Type parameters can have multiple bounds by separating them with `+`,
@ -2428,9 +2428,9 @@ fn draw_all<T: Drawable>(shapes: ~[T]) {
# draw_all(~[c]);
~~~~
You can call that on an array of circles, or an array of rectangles
You can call that on a vector of circles, or a vector of rectangles
(assuming those have suitable `Drawable` traits defined), but not on
an array containing both circles and rectangles. When such behavior is
a vector containing both circles and rectangles. When such behavior is
needed, a trait name can alternately be used as a type, called
an _object_.