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bounds like any other "type parameter".
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None of them would break by implementation-defined struct layout, but
one would break with strict lifetime aliasing, and the rest are just
ugly code.
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Goes from ~ to box
Closes #18551
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* Moves multi-collection files into their own directory, and splits them into seperate files
* Changes exports so that each collection has its own module
* Adds underscores to public modules and filenames to match standard naming conventions
(that is, treemap::{TreeMap, TreeSet} => tree_map::TreeMap, tree_set::TreeSet)
* Renames PriorityQueue to BinaryHeap
* Renames SmallIntMap to VecMap
* Miscellanious fallout fixes
[breaking-change]
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Closes #18126.
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As part of the collections reform RFC, this commit removes all collections
traits in favor of inherent methods on collections themselves. All methods
should continue to be available on all collections.
This is a breaking change with all of the collections traits being removed and
no longer being in the prelude. In order to update old code you should move the
trait implementations to inherent implementations directly on the type itself.
Note that some traits had default methods which will also need to be implemented
to maintain backwards compatibility.
[breaking-change]
cc #18424
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- The signature of the `*_equiv` methods of `HashMap` and similar structures
have changed, and now require one less level of indirection. Change your code
from:
```
hashmap.find_equiv(&"Hello");
hashmap.find_equiv(&&[0u8, 1, 2]);
```
to:
```
hashmap.find_equiv("Hello");
hashmap.find_equiv(&[0u8, 1, 2]);
```
- The generic parameter `T` of the `Hasher::hash<T>` method have become
`Sized?`. Downstream code must add `Sized?` to that method in their
implementations. For example:
```
impl Hasher<FnvState> for FnvHasher {
fn hash<T: Hash<FnvState>>(&self, t: &T) -> u64 { /* .. */ }
}
```
must be changed to:
```
impl Hasher<FnvState> for FnvHasher {
fn hash<Sized? T: Hash<FnvState>>(&self, t: &T) -> u64 { /* .. */ }
// ^^^^^^
}
```
[breaking-change]
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This is an implementation of the rustc bits of [RFC 403][rfc]. This adds a new
flag to the compiler, `-l`, as well as tweaking the `include!` macro (and
related source-centric macros).
The compiler's new `-l` flag is used to link libraries in from the command line.
This flag stacks with `#[link]` directives already found in the program. The
purpose of this flag, also stated in the RFC, is to ease linking against native
libraries which have wildly different requirements across platforms and even
within distributions of one platform. This flag accepts a string of the form
`NAME[:KIND]` where `KIND` is optional or one of dylib, static, or framework.
This is roughly equivalent to if the equivalent `#[link]` directive were just
written in the program.
The `include!` macro has been modified to recursively expand macros to allow
usage of `concat!` as an argument, for example. The use case spelled out in RFC
403 was for `env!` to be used as well to include compile-time generated files.
The macro also received a bit of tweaking to allow it to expand to either an
expression or a series of items, depending on what context it's used in.
[rfc]: https://github.com/rust-lang/rfcs/pull/403
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Conflicts:
src/libcollections/vec.rs
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Conflicts:
src/libsyntax/parse/parser.rs
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Conflicts:
src/libcollections/slice.rs
src/libcore/failure.rs
src/libsyntax/parse/token.rs
src/test/debuginfo/basic-types-mut-globals.rs
src/test/debuginfo/simple-struct.rs
src/test/debuginfo/trait-pointers.rs
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This commit enables implementations of IndexMut for a number of collections,
including Vec, RingBuf, SmallIntMap, TrieMap, TreeMap, and HashMap. At the same
time this deprecates the `get_mut` methods on vectors in favor of using the
indexing notation.
cc #18424
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Closes #15386.
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We can simplify these usages due to the new delimiter representation. `Parser::expect_open_delim` has been added for convenience.
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This common representation for delimeters should make pattern matching easier. Having a separate `token::DelimToken` enum also allows us to enforce the invariant that the opening and closing delimiters must be the same in `ast::TtDelimited`, removing the need to ensure matched delimiters when working with token trees.
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https://github.com/rust-lang/rfcs/pull/221
The current terminology of "task failure" often causes problems when
writing or speaking about code. You often want to talk about the
possibility of an operation that returns a Result "failing", but cannot
because of the ambiguity with task failure. Instead, you have to speak
of "the failing case" or "when the operation does not succeed" or other
circumlocutions.
Likewise, we use a "Failure" header in rustdoc to describe when
operations may fail the task, but it would often be helpful to separate
out a section describing the "Err-producing" case.
We have been steadily moving away from task failure and toward Result as
an error-handling mechanism, so we should optimize our terminology
accordingly: Result-producing functions should be easy to describe.
To update your code, rename any call to `fail!` to `panic!` instead.
Assuming you have not created your own macro named `panic!`, this
will work on UNIX based systems:
grep -lZR 'fail!' . | xargs -0 -l sed -i -e 's/fail!/panic!/g'
You can of course also do this by hand.
[breaking-change]
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Closes #15273 (I did not find how to get the identifier in the message
:/)
Also creates the span_help! macro associated with #18126
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Use the `is_shorthand` field introduced by #17813 (ead6c4b) to make the
prettyprinter output the shorthand form. Fixes a few places that set
`is_shorthand: true` when the pattern is not a PatIdent with the same
name as the field.
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