Stephan T. Lavavej - MSFT

Programmer-Archaeologist, Visual C++ Libraries

Pronounced Steh-fin Lah-wah-wade, or just STL.

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C++20 STL Features: 1 Year of Development on GitHub

My CppCon 2020 talk, “C++20 STL Features: 1 Year of Development on GitHub”, is now available on YouTube. The slides are available on GitHub as PDF and original PPTX. The talk contains complete examples (not snippets!) of several C++20 features: integer comparison functions, constexpr algorithms, uniform container erasure, atomic_ref, ...

C++20 Features and Fixes in VS 2019 16.1 through 16.6

What's New We've been busy implementing C++20 features in MSVC's compiler and Standard Library, and migrating the latter to microsoft/STL on GitHub - in fact, we've been so busy that we haven't posted a C++ toolset changelog since the VS 2019 16.0 toolset changelog. So, here are the compiler features and STL features/fixes that have shipped ...

Open Sourcing MSVC’s STL

Today at CppCon 2019, we (the MSVC team) announced that we're releasing our implementation of the C++ Standard Library (also known as the STL) as open source. is our new repository, containing all of our product source code, a new CMake build system, and a README with more information. As it explains, we're ...

C++17/20 Features and Fixes in Visual Studio 2019

Visual Studio 2019 version 16.0 is now available and is binary compatible with VS 2015/2017. In this first release of VS 2019, we've implemented more compiler and library features from the C++20 Working Paper, implemented more <charconv> overloads (C++17's "final boss"), and fixed many correctness, performance, and throughput issues. ...

How to Use Class Template Argument Deduction

Class Template Argument Deduction (CTAD) is a C++17 Core Language feature that reduces code verbosity. C++17's Standard Library also supports CTAD, so after upgrading your toolset, you can take advantage of this new feature when using STL types like std::pair and std::vector. Class templates in other libraries and your own code will partially ...

C++17 Progress in VS 2017 15.5 and 15.6

VS 2017 15.5 is now available for production use, and 15.6 Preview 1 is also available. As usual, here are feature tables for the STL and compiler, plus a detailed list of STL improvements. (You can also read our previous changelog for VS 2017 15.3.) Please note that due to our branch structure and merge timing, features and fixes described ...
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C++17 Feature Removals And Deprecations

Technology advances by inventing new ways of doing things and by discarding old ways. The C++ Standardization Committee is simultaneously adding new features and removing old features at a gradual pace, because we've discovered thoroughly better ways of writing code. While feature removals can be annoying, in the sense that programmers need to...
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C++17 Features And STL Fixes In VS 2017 15.3

Visual Studio 2017's first toolset update, version 15.3, is currently in preview and will be released in its final form very soon. (The toolset consists of the compiler, linker, and libraries. After VS 2017 RTM, the 15.1 and 15.2 updates improved the IDE. The 15.3 update improves both the IDE and the toolset. In general, you should expect the ...
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C++17 Features In Visual Studio 2017 Version 15.3 Preview

Visual Studio 2017 version 15.3 preview is now available, containing an updated Visual C++ toolset (i.e. compiler, linker, and libraries). Like VS 2015's Updates, we're adding C++17 features in VS 2017's Updates, at a similar release frequency. Unlike VS 2015's Updates (which combined IDE and toolset changes), VS 2017's IDE is being updated ...
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STL Fixes In VS 2017 RTM

VS 2017 RTM will be released soon. VS 2017 RC is available now and contains all of the changes described here - please try it out and send feedback through the IDE's Help > Send Feedback > Report A Problem (or Provide A Suggestion). This is the third and final post for what's changed in the STL between VS 2015 Update 3 and VS 2017 RTM...
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