There are more possible optimizations left (cached length in loops) as
well as some possible bugs (shadowed variables) to fix. This is mostly
syntactic.
The `run` function passed its argument to `msg` via `"$@"`, but `msg`
only printed its first argument. I think the intention was for `msg` to
print all its arguments. (If not, `run` should only `msg "$1"`.)
Took me a moment to figure out that the appropriate response to
"need program file" was to install the program named "file", not
to think "If I didn't need the program file, why would I be
compiling things?".
- add feature gate
- add basic tests
- adjust parser to eliminate conflict between `const fn` and associated
constants
- allow `const fn` in traits/trait-impls, but forbid later in type check
- correct some merge conflicts
the "-c" option of head isn't a posix option, and it isn't supported
under openbsd.
prefer the use of cut -c 1-8 (which is posix) to extract the first 8
chars.
r? @alexcrichton
The change to split up soft_link to OS-specific symlink, symlink_file,
and symlink_dir didn't actually land in 1.0.0. Update the stability and
deprecation attributes to correctly indicate that these changes happend
in 1.1.0.
collections: Reorder slice methods to improve API docs
We have an evolutionary history whose traces are still visible in the
slice docs today.
Some heuristics:
* Group method and method_mut together
* Group method and method_by together
* Group by use case, here we have roughly:
Basic interrogators (len)
Mutation (swap)
Iterators (iter)
Segmentation (split)
Searching (contains)
Permutations (permutations)
Misc (clone_from_slice)
It is hard to find the actual unstable feature which caused the error when using a list of stable and unstable features as the span marks the whole line
```
src/k8055.rs:22:1: 22:64 error: unstable feature
src/k8055.rs:22 #![feature(slice_patterns, rustc_private, core, convert, libc)]
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```
This PR spawns an error for each unstable feature in the list:
```
est.rs:1:12: 1:26 error: unstable feature [-D unstable-features]
test.rs:1 #![feature(slice_patterns, rustc_private, core, convert, libc)]
^~~~~~~~~~~~~~
test.rs:1:28: 1:41 error: unstable feature [-D unstable-features]
test.rs:1 #![feature(slice_patterns, rustc_private, core, convert, libc)]
^~~~~~~~~~~~~
test.rs:1:43: 1:47 error: unstable feature [-D unstable-features]
test.rs:1 #![feature(slice_patterns, rustc_private, core, convert, libc)]
^~~~
test.rs:1:49: 1:56 error: unstable feature [-D unstable-features]
test.rs:1 #![feature(slice_patterns, rustc_private, core, convert, libc)]
^~~~~~~
test.rs:1:58: 1:62 error: unstable feature [-D unstable-features]
test.rs:1 #![feature(slice_patterns, rustc_private, core, convert, libc)]
^~~~
```
the "-c" option of head isn't a posix option, and it isn't supported
under openbsd.
prefer the use of cut -c 1-8 (which is posix) to extract the first 8
chars.
We have an evolutionary history whose traces are still visible in the
slice docs today.
Some heuristics:
* Group method and method_mut together
* Group method and method_by together
* Group by use case, here we have roughly:
Basic interrogators (len)
Mutation (swap)
Iterators (iter)
Segmentation (split)
Searching (contains)
Permutations (permutations)
Misc (clone_from_slice)
