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:
baseAbseil Fundamentals
Thebaselibrary contains initialization code and other code which
all other Abseil code depends on. Code withinbasemay not depend on any
other code (other than the C++ standard library).algorithm
Thealgorithmlibrary contains additions to the C++<algorithm>
library and container-based versions of such algorithms.container
Thecontainerlibrary contains additional STL-style containers,
including Abseil's unordered "Swiss table" containers.debugging
Thedebugginglibrary contains code useful for enabling leak
checks, and stacktrace and symbolization utilities.hash
Thehashlibrary contains the hashing framework and default hash
functor implementations for hashable types in Abseil.memory
Thememorylibrary contains C++11-compatible versions of
std::make_unique()and related memory management facilities.meta
Themetalibrary contains C++11-compatible versions of type checks
available within C++14 and C++17 versions of the C++<type_traits>library.numeric
Thenumericlibrary contains C++11-compatible 128-bit integers.strings
Thestringslibrary contains a variety of strings routines and
utilities, including a C++11-compatible version of the C++17
std::string_viewtype.synchronization
Thesynchronizationlibrary contains concurrency primitives (Abseil's
absl::Mutexclass, an alternative tostd::mutex) and a variety of
synchronization abstractions.time
Thetimelibrary contains abstractions for computing with absolute
points in time, durations of time, and formatting and parsing time within
time zones.types
Thetypeslibrary contains non-container utility types, like a
C++11-compatible version of the C++17std::optionaltype.utility
Theutilitylibrary contains utility and helper code.
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.