| commit | b699707f0bfeae034e36cdfd909b66b0fcab696c | [log] [tgz] |
|---|---|---|
| author | Abseil Team <absl-team@google.com> | Wed Aug 11 11:57:03 2021 -0700 |
| committer | Derek Mauro <dmauro@google.com> | Wed Aug 11 20:41:24 2021 +0000 |
| tree | c961ce4c7b9a040b47a42abbdabdec10a4d7f043 | |
| parent | 8e088c5f3c290c5ac53dd5010fd501d80b483115 [diff] |
Export of internal Abseil changes -- 228b5878d7a994656f383666cfaee34e33e0b09b by Abseil Team <absl-team@google.com>: Add element_type typedef to match std::span<T> PiperOrigin-RevId: 390186160 -- c91d96c88c60be793c525158f76dfcaa5e32d161 by Abseil Team <absl-team@google.com>: Rollback change to only hide retired flags if human-readable output is requested PiperOrigin-RevId: 390183146 -- 170192c10ef8d513de80f29298ce93eeccc3712c by Abseil Team <absl-team@google.com>: Move alignas(16) before ABSL_CONST_INIT and ABSL_DLL. PiperOrigin-RevId: 390182845 -- 77a5ee5081c81cef625fac7bbcf993cc028b32ed by Evan Brown <ezb@google.com>: Use simple SlotOffset and AllocSize logic instead of container_internal::Layout in order to save linker input size for non-opt and sanitizer builds. In opt mode, all of this logic is inlined so we don't save linker input size in opt mode. PiperOrigin-RevId: 389914594 GitOrigin-RevId: 228b5878d7a994656f383666cfaee34e33e0b09b Change-Id: I3b904068687574931d8390071b322c0c3c083283
The repository contains the Abseil C++ library code. Abseil is an open-source collection of C++ code (compliant to C++11) designed to augment the C++ standard library.
Abseil is an open-source collection of C++ library code designed to augment the C++ standard library. The Abseil library code is collected from Google's own C++ code base, has been extensively tested and used in production, and is the same code we depend on in our daily coding lives.
In some cases, Abseil provides pieces missing from the C++ standard; in others, Abseil provides alternatives to the standard for special needs we've found through usage in the Google code base. We denote those cases clearly within the library code we provide you.
Abseil is not meant to be a competitor to the standard library; we've just found that many of these utilities serve a purpose within our code base, and we now want to provide those resources to the C++ community as a whole.
If you want to just get started, make sure you at least run through the Abseil Quickstart. The Quickstart contains information about setting up your development environment, downloading the Abseil code, running tests, and getting a simple binary working.
Bazel and CMake are the official build systems for Abseil.
See the quickstart for more information on building Abseil using the Bazel build system.
If you require CMake support, please check the CMake build instructions and CMake Quickstart.
Abseil is officially supported on many platforms. See the Abseil platform support guide for details on supported operating systems, compilers, CPUs, etc.
Abseil contains the following C++ library components:
base Abseil Fundamentals base library contains initialization code and other code which all other Abseil code depends on. Code within base may not depend on any other code (other than the C++ standard library).algorithm algorithm library contains additions to the C++ <algorithm> library and container-based versions of such algorithms.cleanup cleanup library contains the control-flow-construct-like type absl::Cleanup which is used for executing a callback on scope exit.container container library contains additional STL-style containers, including Abseil's unordered "Swiss table" containers.debugging debugging library contains code useful for enabling leak checks, and stacktrace and symbolization utilities.hash hash library contains the hashing framework and default hash functor implementations for hashable types in Abseil.memory memory library contains C++11-compatible versions of std::make_unique() and related memory management facilities.meta meta library contains C++11-compatible versions of type checks available within C++14 and C++17 versions of the C++ <type_traits> library.numeric numeric library contains C++11-compatible 128-bit integers.status status contains abstractions for error handling, specifically absl::Status and absl::StatusOr<T>.strings strings library contains a variety of strings routines and utilities, including a C++11-compatible version of the C++17 std::string_view type.synchronization synchronization library contains concurrency primitives (Abseil's absl::Mutex class, an alternative to std::mutex) and a variety of synchronization abstractions.time time library contains abstractions for computing with absolute points in time, durations of time, and formatting and parsing time within time zones.types types library contains non-container utility types, like a C++11-compatible version of the C++17 std::optional type.utility utility library contains utility and helper code.Abseil recommends users "live-at-head" (update to the latest commit from the master branch as often as possible). However, we realize this philosophy doesn't work for every project, so we also provide Long Term Support Releases to which we backport fixes for severe bugs. See our release management document for more details.
The Abseil C++ library is licensed under the terms of the Apache license. See LICENSE for more information.
For more information about Abseil: