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This "bubble up an error" macro was originally named if_ok! in order to get it
landed, but after the fact it was discovered that this name is not exactly
desirable.
The name `if_ok!` isn't immediately clear that is has much to do with error
handling, and it doesn't look fantastic in all contexts (if if_ok!(...) {}). In
general, the agreed opinion about `if_ok!` is that is came in as subpar.
The name `try!` is more invocative of error handling, it's shorter by 2 letters,
and it looks fitting in almost all circumstances. One concern about the word
`try!` is that it's too invocative of exceptions, but the belief is that this
will be overcome with documentation and examples.
Close #12037
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* Change '...your own time' => '...your own type'
* Fix typo in the Vector2D example
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It's too easy to forget the `rust` tag to test something.
Closes #11698
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Also move Void to std::any, move drop to std::mem and reexport in
prelude.
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Poly and String have polymorphic `impl`s and so require different method
names.
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* Stop referencing io_error
* Start changing "Failure" sections to "Error" sections
* Update all doc examples to work.
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* All I/O now returns IoResult<T> = Result<T, IoError>
* All formatting traits now return fmt::Result = IoResult<()>
* The if_ok!() macro was added to libstd
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around the lack of UFCS.
The further work is pending a snapshot, to avoid putting #[cfg(stage0)]
attributes on all the traits and duplicating them.
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This is a better name with which to have a #[deriving] mode.
Decision in:
https://github.com/mozilla/rust/wiki/Meeting-weekly-2014-01-28
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from_utf8_owned() behavior
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behavior
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Rename existing iterators to get rid of the Iterator suffix and to
give them names that better describe the things being iterated over.
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* Reexport io::mem and io::buffered structs directly under io, make mem/buffered
private modules
* Remove with_mem_writer
* Remove DEFAULT_CAPACITY and use DEFAULT_BUF_SIZE (in io::buffered)
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This is just an unnecessary trait that no one's ever going to parameterize over
and it's more useful to just define the methods directly on the types
themselves. The implementors of this type almost always don't want
inner_mut_ref() but they're forced to define it as well.
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This commit uniforms the short title of modules provided by libstd,
in order to make their roles more explicit when glancing at the index.
Signed-off-by: Luca Bruno <lucab@debian.org>
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Also remove all instances of 'self within the codebase.
This fixes #10889.
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Also documented a few issues
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Closes #9865
Closes #9808
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* Allow named parameters to specify width/precision
* Intepret the format string '0$' as "width is the 0th argument" instead of
thinking the lone '0' was the sign-aware-zero-padding flag. To get both you'd
need to put '00$' which makes more sense if you want both to happen.
Closes #9669
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It is simply defined as `f64` across every platform right now.
A use case hasn't been presented for a `float` type defined as the
highest precision floating point type implemented in hardware on the
platform. Performance-wise, using the smallest precision correct for the
use case greatly saves on cache space and allows for fitting more
numbers into SSE/AVX registers.
If there was a use case, this could be implemented as simply a type
alias or a struct thanks to `#[cfg(...)]`.
Closes #6592
The mailing list thread, for reference:
https://mail.mozilla.org/pipermail/rust-dev/2013-July/004632.html
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It was a little ambiguous before how explicitl positional parameters and
implicit positional parameters intermingled, and this clarifies how the two
intermingle. This also updates a little bit of documentation/code examples
elsewhere as well.
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find src -name '*.rs' | xargs sed -i '' 's/~~~.*{\.rust}/```rust/g'
find src -name '*.rs' | xargs sed -i '' 's/ ~~~$/ ```/g'
find src -name '*.rs' | xargs sed -i '' 's/^~~~$/ ```/g'
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Hopefull this will make our libstd docs appear a little more "full".
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This renames the syntax-extension file to format from ifmt, and it also reduces
the amount of complexity inside by defining all other macros in terms of
format_args!
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The purpose of this macro is to further reduce the number of allocations which
occur when dealing with formatting strings. This macro will perform all of the
static analysis necessary to validate that a format string is safe, and then it
will wrap up the "format string" into an opaque struct which can then be passed
around.
Two safe functions are added (write/format) which take this opaque argument
structure, unwrap it, and then call the unsafe version of write/format (in an
unsafe block). Other than these two functions, it is not intended for anyone to
ever look inside this opaque struct.
The macro looks a bit odd, but mostly because of rvalue lifetimes this is the
only way for it to be safe that I know of.
Example use-cases of this are:
* third-party libraries can use the default formatting syntax without any
forced allocations
* the fail!() macro can avoid allocating the format string
* the logging macros can avoid allocation any strings
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