- What's New In C 11
- What's New In C# 5.0
- What's New In C# 7 And 71 Download Torrent Download
- What's New In C# 7 And 71 Download Torrent 2017
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- In C# 7, a lot of new features have been introduced, and also enhancement have been done for some features. I will be covering all those things in context of Visual Studio 2017 RC. Given below is the list of features which I am going to explain in this article.
This header describes functions used to manage dynamic storage in C++. Exceptionally within the standard library, this header declares several functions in the global namespace instead of within the std namespace: These are the operator overloads for operator new and operator delete, which handle dynamic storage requests.Some of these functions have also the special property of being.
C++17 is now feature complete, so unlikely to experience large changes. Hundreds of proposals were put forward for C++17.
View from a blue moon download free. Which of those features were added to C++ in C++17?
When using a C++ compiler that supports 'C++1z', which of those features are going to be available when the compiler updates to C++17?
Yakk - Adam NevraumontYakk - Adam Nevraumont
1 Answer
Templates and Generic Code
- Like how functions deduce template arguments, now constructors can deduce the template arguments of the class
- Represents a value of any (non-type template argument) type.
- ( Folding + .. + expressions ) and Revisions
Lambda
- Lambdas are implicitly constexpr if they qualify
[*this]{ std::cout << could << ' be ' << useful << 'n'; }
Attributes
![New New](/uploads/1/2/6/2/126276061/408072666.jpg)
[[fallthrough]]
,[[nodiscard]]
,[[maybe_unused]]
attributesusing
in attributes to avoid having to repeat an attribute namespace.- Compilers are now required to ignore non-standard attributes they don't recognize.
- The C++14 wording allowed compilers to reject unknown scoped attributes.
Syntax cleanup
- Like inline functions
- Compiler picks where the instance is instantiated
- Deprecate static constexpr redeclaration, now implicitly inline.
- Simple
static_assert(expression);
with no string - no
throw
unlessthrow()
, andthrow()
isnoexcept(true)
.
Cleaner multi-return and flow control
- Basically, first-class
std::tie
withauto
- Example:
const auto [it, inserted] = map.insert( {'foo', bar} );
- Creates variables
it
andinserted
with deduced type from thepair
thatmap::insert
returns.
- Works with tuple/pair-likes &
std::array
s and relatively flat structs - Actually named structured bindings in standard
- Basically, first-class
if (const auto [it, inserted] = map.insert( {'foo', bar} ); inserted)
- Extends the
if(decl)
to cases wheredecl
isn't convertible-to-bool sensibly.
- Appears to be mostly support for sentinels, or end iterators that are not the same type as begin iterators, which helps with null-terminated loops and the like.
- Much requested feature to simplify almost-generic code.
Misc
- Finally!
- Not in all cases, but distinguishes syntax where you are 'just creating something' that was called elision, from 'genuine elision'.
- Fixed order-of-evaluation for (some) expressions with some modifications
- Not including function arguments, but function argument evaluation interleaving now banned
- Makes a bunch of broken code work mostly, and makes
.then
on future work.
- Forward progress guarantees (FPG) (also, FPGs for parallel algorithms)
- I think this is saying 'the implementation may not stall threads forever'?
u8'U', u8'T', u8'F', u8'8'
character literals (string already existed)- Test if a header file include would be an error
- makes migrating from experimental to std almost seamless
- inherited constructors fixes to some corner cases (see P0136R0 for examples of behavior changes)
- aggregate initialization with inheritance.
Data types
- Almost-always non-empty last I checked?
- Tagged union type
- {awesome|useful}
- Maybe holds one of something
- Ridiculously useful
- Holds one of anything (that is copyable)
std::string
like reference-to-character-array or substring- Never take a
string const&
again. Also can make parsing a bajillion times faster.
std::byte
off more than they could chew.- Neither an integer nor a character, just data
Invoke stuff
std::invoke
- Call any callable (function pointer, function, member pointer) with one syntax. From the standard INVOKE concept.
std::apply
- Takes a function-like and a tuple, and unpacks the tuple into the call.
std::make_from_tuple
,std::apply
applied to object constructionis_invocable
,is_invocable_r
,invoke_result
- Deprecates
result_of
is_invocable<Foo(Args..), R>
is 'can you callFoo
withArgs..
and get something compatible withR
', whereR=void
is default.invoke_result<Foo, Args..>
isstd::result_of_t<Foo(Args..)>
but apparently less confusing?
- Deprecates
File System TS v1
[class.directory_iterator]
and[class.recursive_directory_iterator]
New algorithms
- Dymo cardscan 62 software.
for_each_n
reduce
transform_reduce
exclusive_scan
inclusive_scan
Naruto shippuden ultimate ninja storm 4 pc download torrent.transform_exclusive_scan
transform_inclusive_scan
- Added for threading purposes, exposed even if you aren't using them threaded
Threading
- Untimed, which can be more efficient if you don't need it.
atomic<T>
::is_always_lockfree
- Saves some
std::lock
pain when locking more than one mutex at a time.
- Saves some
- The linked paper from 2014, may be out of date
- Parallel versions of
std
algorithms, and related machinery
(parts of) Library Fundamentals TS v1 not covered above or below
[func.searchers]
and[alg.search]
- A searching algorithm and techniques
- Polymorphic allocator, like
std::function
for allocators - And some standard memory resources to go with it.
- Polymorphic allocator, like
- Kohler engine serial number.
std::sample
, sampling from a range?
Container Improvements
What's New In C 11
try_emplace
andinsert_or_assign
- gives better guarantees in some cases where spurious move/copy would be bad
- Move nodes between containers cheaply.
- Merge whole containers cheaply.
- non-const
.data()
for string. - non-member
std::size
,std::empty
,std::data
- like
std::begin
/end
- like
- The
emplace
family of functions now returns a reference to the created object.
Smart pointer changes
unique_ptr<T[]>
fixes and otherunique_ptr
tweaks.weak_from_this
and some fixed to shared from this
![What What](https://s-media-cache-ak0.pinimg.com/236x/c7/ad/1e/c7ad1e8c53772abdaa2db977f3d5ee15--audi-brushes.jpg)
Other std
datatype improvements:
- TriviallyCopyable reference_wrapper, can be performance boost
Misc
- C++17 library is based on C11 instead of C99
- Reserved
std[0-9]+
for future standard libraries - utility code already in most
std
implementations exposed
- utility code already in most
- Special math functions
- scientists may like them
std::clamp()
std::clamp( a, b, c ) std::max( b, std::min( a, c ) )
roughly
std::uncaught_exceptions
- Required if you want to only throw if safe from destructors
std::void_t<T>
- Surprisingly useful when writing templates
std::owner_less<void>
- like
std::less<void>
, but for smart pointers to sort based on contents
- like
std::conjunction
,std::disjunction
,std::negation
exposedstd::not_fn
- std::is_contiguous_layout, useful for efficient hashing
- std::to_chars/std::from_chars, high performance, locale agnostic number conversion; finally a way to serialize/deserialize to human readable formats (JSON & co)
std::default_order, indirection over(breaks ABI of some compilers due to name mangling, removed.)std::less
.
Traits
Deprecated
- Some C libraries,
result_of
, replaced withinvoke_result
shared_ptr::unique
, it isn't very threadsafe
Isocpp.org has has an independent list of changes since C++14; it has been partly pillaged.
Naturally TS work continues in parallel, so there are some TS that are not-quite-ripe that will have to wait for the next iteration. The target for the next iteration is C++20 as previously planned, not C++19 as some rumors implied. C++1O has been avoided.
Initial list taken from this reddit post and this reddit post, with links added via googling or from the above isocpp.org page.
Additional entries pillaged from SD-6 feature-test list.
clang's feature list and library feature list are next to be pillaged. This doesn't seem to be reliable, as it is C++1z, not C++17.
these slides had some features missing elsewhere.
What's New In C# 5.0
While 'what was removed' was not asked, here is a short list of a few things ((mostly?) previous deprecated) that are removed in C++17 from C++:
register
, keyword reserved for future use- trigraphs
- if you still need them, they are now part of your source file encoding, not part of language
There were rewordings. I am unsure if these have any impact on code, or if they are just cleanups in the standard:
- P0505R0 (constexpr chrono)
- P0418R2 (atomic tweaks)
- P0512R0 (template argument deduction tweaks)
- P0490R0 (structured binding tweaks)
- P0513R0 (changes to
std::hash
) - P0502R0 (parallel exceptions)
- P0509R1 (updating restrictions on exception handling)
- P0012R1 (make exception specifications be part of the type system)
- P0510R0 (restrictions on variants)
- P0504R0 (tags for optional/variant/any)
- P0497R0 (shared ptr tweaks)
- P0508R0 (structured bindings node handles)
- P0521R0 (shared pointer use count and unique changes?)
What's New In C# 7 And 71 Download Torrent Download
- Should be updated to 'Modifications to existing features' here.
Yakk - Adam NevraumontYakk - Adam Nevraumont