C++ Format
tinyformat
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C++ Format | tinyformat | |
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161 | 4 | |
19,307 | 517 | |
1.6% | - | |
9.8 | 0.0 | |
4 days ago | 3 months ago | |
C++ | C++ | |
GNU General Public License v3.0 or later | - |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
C++ Format
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C++ left arrow operator (2016)
Continuation passing monads form the basis of a perfectly valid and usable software architecture and programming pattern.
In the case of ostream and operator<<, this pattern reduces the number of intermediate objects that would otherwise be constructed.
If you object to iostream on religious or stylistic grounds, there's always fmt which is more like Go or Python string interpolation.[0]
0. https://fmt.dev
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C++ Game Utility Libraries: for Game Dev Rustaceans
GitHub repo: fmtlib/fmt
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Creating k-NN with C++ (from Scratch)
cmake_minimum_required(VERSION 3.5) project(knn_cpp CXX) # Set up C++ version and properties include(CheckIncludeFileCXX) check_include_file_cxx(any HAS_ANY) check_include_file_cxx(string_view HAS_STRING_VIEW) check_include_file_cxx(coroutine HAS_COROUTINE) set(CMAKE_CXX_STANDARD 20) set(CMAKE_BUILD_TYPE Debug) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_CXX_EXTENSIONS OFF) # Copy data file to build directory file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/iris.data DESTINATION ${CMAKE_CURRENT_BINARY_DIR}) # Download library usinng FetchContent include(FetchContent) FetchContent_Declare(matplotplusplus GIT_REPOSITORY https://github.com/alandefreitas/matplotplusplus GIT_TAG origin/master) FetchContent_GetProperties(matplotplusplus) if(NOT matplotplusplus_POPULATED) FetchContent_Populate(matplotplusplus) add_subdirectory(${matplotplusplus_SOURCE_DIR} ${matplotplusplus_BINARY_DIR} EXCLUDE_FROM_ALL) endif() FetchContent_Declare( fmt GIT_REPOSITORY https://github.com/fmtlib/fmt.git GIT_TAG 7.1.3 # Adjust the version as needed ) FetchContent_MakeAvailable(fmt) # Add executable and link project libraries and folders add_executable(${PROJECT_NAME} main.cc) target_link_libraries(${PROJECT_NAME} PUBLIC matplot fmt::fmt) aux_source_directory(lib LIB_SRC) target_include_directories(${PROJECT_NAME} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}) target_sources(${PROJECT_NAME} PRIVATE ${LIB_SRC}) add_subdirectory(tests)
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Optimizing the unoptimizable: a journey to faster C++ compile times
Good catch, thanks! Fixed now. This explains why the difference was kinda low compared to another benchmark: https://github.com/fmtlib/fmt?tab=readme-ov-file#compile-tim....
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Learn Modern C++
> This is from C++23, right?
std::println is, yes.
> I wonder how available this is within compilers
https://en.cppreference.com/w/cpp/compiler_support says clang, gcc, and msvc all support it, though I don't know how recent those versions are off the top of my head.
In my understanding, with this specific feature, if you want a polyfill for older compilers, or to use some more cutting-edge features that haven't been standardized yet, https://github.com/fmtlib/fmt is available to you.
- The C++20 Naughty and Nice List for Game Devs
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For processing strings, streams in C++ can be slow
{fmt} has internal buffering but it's not yet exposed to users. There is a feature request for it: https://github.com/fmtlib/fmt/issues/2354. FILE buffering is not too bad but it can be easily optimized: https://www.zverovich.net/2020/08/04/optimal-file-buffer-siz....
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adoption of fmt based logging
Automatic use of operator<< when that exists was present in fmt until version 9.0.0. In version 9 you could use FMT_DEPRECATED_OSTREAM to opt in the old behaviour, but this too was removed in version 10.0.0. Now there is no way to automatically use operator<<.
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What's your favorite c++20 feature that should've been there 10 years ago?
You can install it https://github.com/fmtlib/fmt
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Codebases to read
Additionally, if you like low level stuff, check out libfmt (https://github.com/fmtlib/fmt) - not a big project, not difficult to understand. Or something like simdjson (https://github.com/simdjson/simdjson).
tinyformat
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I’m about to start learning C++
printf has some pretty serious security implications. When I want more complicated text printing options than what is easy or terse in iostream then I use the tinyformat library.
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The Year is 2022 and the Standard is C++20; what is your preferred way to do Text I/O?
The usual way I do I/O is via combining C++ stringstremas with either tinyformat or via an implementation of p0117 "variadic to_[basic_]string, depending on the particular need.
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[Belay the C++] Yet another reason to not use printf (or write C code in general)
Haven't been able to make it work with MSVC 2012 (the earliest Windows-side compiler I need to support). I myself use tinyformat instead.
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Is there a real benefit to using cout as opposed to printf that offsets the extra work in formatting?
However, not all is lost. While there are libraries like {fmt} I don't pay attention to them because they are far away into The Future and unusable with my requirements (C++03 support at the earliest, work reasons). Most newfangled libs I've seen are intended for Compilers of the Future, for C++20/C++23 and the like, and with that among other reasons are not generic enough for me. Instead I just use tinyformat that lays on top of both and bridges them, not to mention the biggest sell that is rrtaining the POSIX style printf notation (why didn't {fmt} go with that is still a mystery to me).
What are some alternatives?
spdlog - Fast C++ logging library.
blackboxwm - A window manager for X11
Better Enums - C++ compile-time enum to string, iteration, in a single header file
printf-tac-toe - tic-tac-toe in a single call to printf
ZXing - ZXing ("Zebra Crossing") barcode scanning library for Java, Android
papers - ISO/IEC JTC1 SC22 WG21 paper scheduling and management
FastFormat - The fastest, most robust C++ formatting library
scnlib - scanf for modern C++
ZBar - Clone of the mercurial repository http://zbar.hg.sourceforge.net:8000/hgroot/zbar/zbar
AnyAny - C++17 library for comfortable and efficient dynamic polymorphism
Scintilla
libcfg-cpp - A minimalistic configuration manager for C++ projects.