1. reasons to move your C++ code to Visual Studio
7/2/2018 8:57 PM
BRK3305 7
reasons to move your C++ code to Visual Studio
2017
Rong Lu
Principal Program Manager
Visual C++ team
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. 7 2017 One IDE to: #1 write modern, portable C++ #2 pain-free upgrades
7/2/2018 8:57 PM
One IDE to:
#1 write modern, portable C++
#2 pain-free upgrades
#3 build faster, run faster
#4 make you more productive
#5 edit, build, debug Any code (via Open Folder)
#6 target multiple platforms
#7 streamline your installation
reasons you will love
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

3. #1 write modern, portable C++
7/2/2018 8:57 PM
#1 write modern, portable C++
reasons to move your C++ code to
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

4. MSVC Conformance C++11 C++14 C++17 C++TS (experimental)
Completed in VS2017 RTM or earlier
Completed in VS
Targeting in VS
Two-phase Name Lookup (partial support) under /permissive-
Targeting in VS
C++11
default/deleted func, Inline namespaces, User-defined literals, noexcept, char16_t/char32_t, alignas/alignof, __func__, Extended sizeof, Inheriting constructors, Unicode string literals, Magic statics, thread_local, Unrestricted unions, Attributes, Universal char names in literals, Data-dep ordering attributes, constexpr, Expression SFINAE (via Boost), Expression SFINAE (via more libraries), STL: All C++11 Features
C++14
auto, decltype(auto) return types, Generic lambdas, Generalized lambda captures, Binary literals, Sized Deallocators, Deprecated attribute, Digit separator, Variable Templates, NSDMI for Aggregates, STL: All C++14 Features, Extended Constexpr
C++17
Auto with braced-init list, u8 char literal, Attributes on namespace and enum, Removing trigraphs, typename in template template-param, Nested Namespace, Ignoring unrecognized attributes, Terse static_assert, Attribute [[fallthrough]], Generalized range-based for-loops,
STL:<any>, STL:<optional>, STL:<string_view>, STL:<variant>, STL:<algorithm> sample(), STL:<tuple> apply()
Structured Bindings
Selection statements with initializers
Construction rules for enum class values
Constexpr lambdas
if constexpr
__has_include
Capturing *this by value
Using attribute namespaces without repetition
[[maybe_unused]]
[[nodiscard]]
Removing operator++ for bool
Remove register keyword
STL:<string_view> UDLs
Over-aligned dynamic memory allocation
Allowing more non-type template args
Fold expressions
Removing some empty unary folds
Adding noexcept to the type system
Inline variables
Removing dynamic-exception-specifications
Hexfloat literals
Matching template template-parameters to compatible arguments
Refining expression evaluation order
Declaring non-type template parameters with auto
Rewording inheriting constructors
Fixing qualification conversions
Guaranteed copy elision
Pack expansions in using-declarations
Extended aggregate initialization
Template argument deduction for class templates
C++TS
(experimental)
C++ Coroutines
Filesystem*
C++ Modules
C++ Concepts

5. std::optional<T>
Microsoft Build 2017
7/2/2018 8:57 PM
std::optional<T>
bool reduce(Item it,
/*in, opt*/ Item* subitem,
/*out*/ CachedItem* ret) {
CachedItem* retVal;
if (download(it, retVal)) {
if (subitem != nullptr) {
CachedItem* subItemRet;
if (download(*subitem, subItemRet)) {
retVal->addSubitem(*subItemRet); }
else return false;
return true;
return false;
Item i(...), j(...);
CachedItem* ret = nullptr;
if (reduce(i, &j, ret)) {
cout << ret->name << endl;
After
optional<CachedItem> reduce(Item it,
optional<Item> subitem) {
CachedItem* retVal;
if (download(it, retVal)) {
if (subitem) {
CachedItem* subItemRet;
if (download(*subitem, subItemRet)) {
retVal->addSubitem(*subItemRet); }
else return nullopt;
return *retVal;
return nullopt;
Item i(...), j(...);
auto ret = reduce(i, j);
if (ret) {
cout << ret->name << endl;
Before
Return parameter is not set!
Return value is set.
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

6. MSVC Conformance C++11 C++14 C++17 C++TS (experimental)
Completed in VS2017 RTM or earlier
Completed in VS
Targeting in VS
Two-phase Name Lookup (partial support) under /permissive-
Targeting in VS
C++11
default/deleted func, Inline namespaces, User-defined literals, noexcept, char16_t/char32_t, alignas/alignof, __func__, Extended sizeof, Inheriting constructors, Unicode string literals, Magic statics, thread_local, Unrestricted unions, Attributes, Universal char names in literals, Data-dep ordering attributes, constexpr, Expression SFINAE (via Boost), Expression SFINAE (via more libraries), STL: All C++11 Features
C++14
auto, decltype(auto) return types, Generic lambdas, Generalized lambda captures, Binary literals, Sized Deallocators, Deprecated attribute, Digit separator, Variable Templates, NSDMI for Aggregates, STL: All C++14 Features, Extended Constexpr
C++17
Auto with braced-init list, u8 char literal, Attributes on namespace and enum, Removing trigraphs, typename in template template-param, Nested Namespace, Ignoring unrecognized attributes, Terse static_assert, Attribute [[fallthrough]], Generalized range-based for-loops,
STL:<any>, STL:<optional>, STL:<string_view>, STL:<variant>, STL:<algorithm> sample(), STL:<tuple> apply()
Structured Bindings
Selection statements with initializers
Construction rules for enum class values
Constexpr lambdas
if constexpr
__has_include
Capturing *this by value
Using attribute namespaces without repetition
[[maybe_unused]]
[[nodiscard]]
Removing operator++ for bool
Remove register keyword
STL:<string_view> UDLs
Over-aligned dynamic memory allocation
Allowing more non-type template args
Fold expressions
Removing some empty unary folds
Adding noexcept to the type system
Inline variables
Removing dynamic-exception-specifications
Hexfloat literals
Matching template template-parameters to compatible arguments
Refining expression evaluation order
Declaring non-type template parameters with auto
Rewording inheriting constructors
Fixing qualification conversions
Guaranteed copy elision
Pack expansions in using-declarations
Extended aggregate initialization
Template argument deduction for class templates
C++TS
(experimental)
C++ Coroutines
Filesystem*
C++ Modules
C++ Concepts

7. C++ Core Guidelines C++ Core Check validates your code
Microsoft Build 2017
7/2/2018 8:57 PM
C++ Core Guidelines
C++ Core Check validates your code
(part of C++ Code Analysis)
Bounds checks
Type checks
Resource management checks
Interfaces; Expressions and Statements
Guidelines Support Library
span<T>
not_null<T>
owner<T>, and more
Install GSL from:
Source code:
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

8. 7 #2 pain-free upgrades 2017 Visual Studio
7/2/2018 8:57 PM
#2 pain-free upgrades
reasons to move your C++ code to
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

9. Pain-free upgrade – install VC++ 2015 toolset is easy
Microsoft Build 2016
7/2/2018 8:57 PM
Pain-free upgrade – install VC toolset is easy
Install VS2015 VC++ toolset in the VS2017 installer
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

10. Demo Microsoft Build 2017 7/2/2018 8:57 PM
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

11. Pain-Free Upgrade You can upgrade in different ways at your own pace…
Compile projects with the VC toolset while enjoying the VS2017 IDE features
Link VS2017 projects against VS2015 libs with no code change - Binary compatibility between the VS2015 and VS2017 runtimes
VC Toolset and C++ Language Standard of your choice.

12. Pain-Free Upgrade (cont’d)
7/2/2018 8:57 PM
Pain-Free Upgrade (cont’d)
Vcpkg: package manager for open-source C++ libs on Windows
Support 350+ libs already (vcpkg install <libname>)
Make libs available to VS projects (vcpkg integrate install)
On GitHub:
Online Resources
Porting and Upgrading Guide:
GitHub repo:
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

13. Developer Inner Loop Read & Edit Diagnose Commit Compile Test
Microsoft Build 2016
7/2/2018 8:57 PM
Developer Inner Loop
Read & Edit
Create and update your code
Diagnose
Fix and optimize your code
Commit
Share your code
Compile
Build your code
Test
Validate your code
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

14. #3 build faster, run faster
7/2/2018 8:57 PM
#3 build faster, run faster
reasons to move your C++ code to
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

15. Build faster, less memory consumption
Build and link faster
Linker 30% faster than VS2015. Building SPEC 2017 is 20% faster than VS2015 end to end.
/debug:fastlink on by default in VS2017 (2-4x faster than the old default /debug:full)
Solutions load faster and consume less memory
IntelliSense is faster when no PCH is configured (use auto-precompiled headers)
Memory usage during debugging significantly decreased
Chromium
4600 Solution Items
VS 2015 Update 3
VS 2017
Improvement
Time - First Solution Open (s)
1,213 s
182 s
6.6x
Time – Subsequent Solution Open (s)
1,211 s
68 s
17.8x
Private Working Set (MB)
2,293 MB
804 MB
2.8x
Virtual Memory (MB)
3,066 MB
1,302 MB
2.3x
aka.ms/vcperf

16. Your code runs faster
Code generated by VS2017 runs 9% faster than VS2015 by just re- compiling with VS2017 toolset
Taking advantage of the new SSA-based optimizer
Many inliner improvements
Improved loop optimizations …
SPEC 2017 Benchmark
VS 2015 Update 3 VS
602.gcc_s
521
443
605.mcf_s
572
546
620.omnetpp_s
402
393
623.xalancbmk_s
163
157
625.x264_s
269
204
631.deepsjeng_s
317
302
641.leela_s
450
431
657.xz_s
2247
2101
619.lbm_s
943
869
638.imagick_s
5721
4891
644.nab_s
1907
1637
508.namd_r
226
222
510.parest_r
287
280
511.povray_r
336
337
526.blender_r
278
239

17. #4 make you more productive
7/2/2018 8:57 PM
#4 make you more productive
reasons to move your C++ code to
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

18. Demo Microsoft Build 2017 7/2/2018 8:57 PM
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

19. C++ Productivity Read & Edit
Microsoft Build 2017
7/2/2018 8:57 PM
Compile
Test
Diagnose
Read & Edit
Commit
C++ Productivity
Read & Edit
Predictive IntelliSense, IntelliSense filtering, Code formatting enforcement with editorconfig
Manage a large list more easily with Find All References (better perf coming in 15.5)
Navigate To -> Go To with filtering
Improved Error List results
Coming soon: Ctrl + Click to Go To Definition, Structure Visualizer in-box (download the extension in the meantime)
Diagnose
Run to Click, Reattach to Process, Improved Exception Helper, Break-on-exception conditions, Improved Memory and CPU profiler
Test
Test Adapter for Google Test
Test Adapter for Boost.Test …
Commit
Force push your changes
SSH support for remotes
View Commit Diff
Compile
/debug:fastlink 30% improvements
OSS libs from
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

20. #5 edit, build, debug Any code (via open folder)
7/2/2018 8:57 PM
#5 edit, build, debug Any code (via open folder)
reasons to move your C++ code to
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

21. Microsoft Build 2017
7/2/2018 8:57 PM
Open Folder and CMake
Edit, build, debug Any Code by simply opening the source folder in VS2017
Ideal for non-MSBuild projects (CMake, make, or any other C++ build systems)
Full C++ IntelliSense and code browsing support
Flexible integration of external build processes
Familiar Visual Studio debugging experience
Out-of-box support for CMake projects
F5 just works!
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

22. Demo Microsoft Build 2017 7/2/2018 8:57 PM
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

23. #6 target multiple platforms
7/2/2018 8:57 PM
#6 target multiple platforms
reasons to move your C++ code to
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

24. Android C++ Development
Microsoft Build 2017
7/2/2018 8:57 PM
Android C++ Development
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

25. iOS C++ Development Microsoft Build 2017 7/2/2018 8:57 PM
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

26. Demo: Linux Development
Microsoft Build 2017
7/2/2018 8:57 PM
Demo: Linux Development
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

27. Microsoft Build 2017
7/2/2018 8:57 PM
Linux C++ Development
C++ Linux Development workload now part of VS installer.
Target any Linux distro with SSH, gdbserver and compiler.
Use the full power of the VS debugger with your C/C++ Linux development
IntelliSense & Code browsing
out of the box for GCC and stdlibc++
easily extended by importing your own headers.
Bring your existing build processes with the makefile project support
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

28. #7 streamlined installation
7/2/2018 8:57 PM
#7 streamlined installation
reasons to move your C++ code to
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

29. 5 C++ workloads Desktop development with C++
Microsoft Build 2016
7/2/2018 8:57 PM
5 C++ workloads
Desktop development with C++
Universal Windows Platform development
Mobile development with C++
Game development with C++
Linux development with C++
aka.ms/vcinstaller
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

30. 7 #7++ you helped build it 2017 Visual Studio
7/2/2018 8:57 PM
#7++ you helped build it
reasons to move your C++ code to
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

31. fixed bugs publicly reported through Connect & IDE
You Helped Us Build It!
Visual Studio User Voice
“Report a Problem…” tool
2,887 Votes
on UserVoice
1,376
fixed bugs publicly reported through Connect & IDE

32. 7 2017 #1 write modern, portable C++ #2 pain-free upgrades
7/2/2018 8:57 PM
#1 write modern, portable C++
#2 pain-free upgrades
#3 build faster, run faster
#4 make you more productive
#5 edit, build, debug Any code (via Open Folder)
#6 target multiple platforms
#7 streamline your installation
#7++ you helped build it
reasons you will love
Visual Studio 7
2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

33. 7/2/2018 8:57 PM
Now it’s your turn!
Tell us about reasons that you can’t move to VS2017  OR, your experience moving to VS2017
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

34. Please evaluate this session
Tech Ready 15
7/2/2018
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© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

35. 7/2/2018 8:57 PM
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.