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- f9f24ecdf159c232b68a72b3be4d66854489f13e Run clang-format on all outbound Copybara-transformed code. by Daniel Katz <katzdm@google.com> - 54b1d34753a2b6999bb65e0c05255bde7de8cfb5 Properly indent the PROPERTY FOLDER calls in AbseilHelper... by Jon Cohen <cohenjon@google.com> - 540ce6bab1a7c81a15d7244b9effcb1c1378911b Fix -Wgnu-zero-variadic-macro-arguments warning under cla... by Derek Mauro <dmauro@google.com> - cc82ee3f18e882bfcba911ebc1b8ea39983f319b Suppress MSVC unreachable code warning in optional.h by Abseil Team <absl-team@google.com> - c1176bed2a7a2d20e72db2601f1044c097d8078c Change signature of __mmap2() in direct_mmap.h to match _... by Greg Falcon <gfalcon@google.com> - 5c02fe2031997fe064bd189fecc593395f34fae8 Change released benchmarks back to cc_test targets. by Alex Strelnikov <strel@google.com> - 7a342ecf7a8c56276d28d94158291fe2d64b2543 Fix sanitizer example command. by Derek Mauro <dmauro@google.com> - 0c2c55fe01cd84ab885d9f4865d7672c423680d2 Remove redundant cast; string_view::find already returns ... by Jorg Brown <jorg@google.com> GitOrigin-RevId: 2db207ef16d548380e4f5cd1d583546d0b5f7d61 Change-Id: I5b61d91c8c7b4754c839868fc73d612b31bf5c33 |
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Abseil - C++ Common Libraries
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.
Table of Contents
About Abseil
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.
Quickstart
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.
Building Abseil
Bazel is the official build system for Abseil, which is supported on most major platforms (Linux, Windows, MacOS, for example) and compilers. 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.
Codemap
Abseil contains the following C++ library components:
base
Abseil Fundamentals
Thebase
library contains initialization code and other code which all other Abseil code depends on. Code withinbase
may not depend on any other code (other than the C++ standard library).algorithm
Thealgorithm
library contains additions to the C++<algorithm>
library and container-based versions of such algorithms.container
Thecontainer
library contains additional STL-style containers.debugging
Thedebugging
library contains code useful for enabling leak checks. Future updates will add stacktrace and symbolization utilities.memory
Thememory
library contains C++11-compatible versions ofstd::make_unique()
and related memory management facilities.meta
Themeta
library contains C++11-compatible versions of type checks available within C++14 and C++17 versions of the C++<type_traits>
library.numeric
Thenumeric
library contains C++11-compatible 128-bit integers.strings
Thestrings
library contains a variety of strings routines and utilities, including a C++11-compatible version of the C++17std::string_view
type.synchronization
Thesynchronization
library contains concurrency primitives (Abseil'sabsl::Mutex
class, an alternative tostd::mutex
) and a variety of synchronization abstractions.time
Thetime
library contains abstractions for computing with absolute points in time, durations of time, and formatting and parsing time within time zones.types
Thetypes
library contains non-container utility types, like a C++11-compatible version of the C++17std::optional
type.
License
The Abseil C++ library is licensed under the terms of the Apache license. See LICENSE for more information.
Links
For more information about Abseil:
- Consult our Abseil Introduction
- Read Why Adopt Abseil to understand our design philosophy.
- Peruse our Abseil Compatibility Guarantees to understand both what we promise to you, and what we expect of you in return.