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Fix some std/extra language in the tutorial
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@ -1480,7 +1480,6 @@ This code creates a closure that adds a given string to its argument,
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returns it from a function, and then calls it:
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~~~~
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# extern mod std;
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fn mk_appender(suffix: ~str) -> @fn(~str) -> ~str {
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// The compiler knows that we intend this closure to be of type @fn
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return |s| s + suffix;
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@ -2292,7 +2291,7 @@ let nonsense = mycircle.radius() * mycircle.area();
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## Deriving implementations for traits
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A small number of traits in `std` and `std` can have implementations
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A small number of traits in `std` and `extra` can have implementations
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that can be automatically derived. These instances are specified by
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placing the `deriving` attribute on a data type declaration. For
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example, the following will mean that `Circle` has an implementation
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@ -2541,9 +2540,9 @@ as well as an inscrutable string of alphanumerics. These are both
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part of Rust's library versioning scheme. The alphanumerics are
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a hash representing the crate metadata.
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## The std library
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## The standard library
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The Rust std library provides runtime features required by the language,
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The Rust standard library provides runtime features required by the language,
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including the task scheduler and memory allocators, as well as library
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support for Rust built-in types, platform abstractions, and other commonly
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used features.
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@ -2559,7 +2558,7 @@ I/O abstractions ([`io`]), [containers] like [`hashmap`],
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common traits ([`kinds`], [`ops`], [`cmp`], [`num`],
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[`to_str`], [`clone`]), and complete bindings to the C standard library ([`libc`]).
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### Core injection and the Rust prelude
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### Standard Library injection and the Rust prelude
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`std` is imported at the topmost level of every crate by default, as
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if the first line of each crate was
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@ -2571,7 +2570,7 @@ with the `std::` path prefix, as in `use std::vec`, `use std::task::spawn`,
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etc.
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Additionally, `std` contains a `prelude` module that reexports many of the
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most common std modules, types and traits. The contents of the prelude are
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most common standard modules, types and traits. The contents of the prelude are
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imported into every *module* by default. Implicitly, all modules behave as if
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they contained the following prologue:
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