tip-of-the-week/cpp

C++ Tip Of The Week

1,669

684 commits

updated Jun 1, 2026

tip-of-the-week.github.io/cpp

See the code

README

C++ Tip of The Week

C++26

Did you know that C++26 added structured binding declaration as a condition?

Did you know that C++26 added support constexpr placement new?

Did you know that C++26 added = delete("should have a reason")?

Did you know that C++26 added span.at?

Did you know about C++26 simd proposal (1/N)?

Did you know about C++26 simd proposal (2/N)?

Did you know about C++26 static reflection proposal (1/N)?

Did you know about C++26 static reflection proposal (2/N)?

Did you know about C++26 static reflection proposal (3/N)?

Did you know about C++26 static reflection proposal (4/N)?

Did you know about C++26 static reflection proposal (5/N)?

Did you know about C++26 static reflection proposal (6/N)?

Did you know about C++26 static reflection proposal (7/N)?

Did you know that C++26 added Pack Indexing?

Did you know about C++26 proposal - variadic friends?

Did you know about C++26 proposal - inplace_vector?

Did you know about C++26 proposal - Aggregates are named tuples?

Did you know that C++26 added new SI prefixes?

Did you know that C++26 changed arithmetic overloads of std::to_string and std::to_wstring to use std::format?

Did you know that C++26 added more constexpr for <cmath> and <complex>?

Did you know that C++26 added testing for success or failure of <charconv> functions?

Did you know that C++26 allows constexpr cast from void*?

Did you know that C++26 added Member visit?

Did you know that C++26 std.format added formatting pointers ability?

Did you know that C++26 added 'A nice placeholder with no name'?

Did you know that C++26 added user-generated static_assert messages?

Did you know that C++26 added bind front and back to NTTP callables?

Did you know that C++26 added `@, $, and `` to the basic character set?

C++23

Did you know that C++23 added constexpr bitset?

Did you know that C++23 added Explicit lifetime management (1/N)?

Did you know that C++23 added spanstream - A strstream replacement using span as buffer?

Did you know that C++23 added standard support for flat_map?

Did you know that C++23 added range string_view constructor?

Did you know that C++23 added std::invoke_r?

Did you know that C++23 extended floating-point types?

Did you know that C++23 deprecated std::aligned_storage and std::aligned_union?

Did you know that C++23 added Monadic operations for std::expected?

Did you know that C++23 added support for formatting ranges?

Did you know that std::unique_ptr can be constexpr in C++23?

Did you know that C++23 added static operator[]?

Did you know that functions in <charconv> are constexpr since C++23?

Did you know that C++23 added support for constexpr std::bitset?

Did you know that C++23 added static operator()?

Did you know that C++23 added stacktrace library?

Did you know that [[assume]] attribute has been accepted to C++23?

Did you know that C++23 added auto(x): decay-copy in the language?

Did you know about C++23 ispanstream - A strstream replacement using span as buffer?

Did you know that C++23 added ranges::to (conversion from ranges to containers)?

Did you know that C++23 added Literal Suffix for (signed) size_t?

Did you know that C++23 added bind_back to simplify writing higher order functions?

Did you know about C++23 proposal Structured Bindings can introduce a Pack?

Did you know that C++23 added std::to_underlying?

Did you know that C++23 added std::unreachable?

Did you know that C++23 added Attributes on Lambda-Expressions?

Did you know that C++23 added std::byteswap to swap bytes?

Did you know that type_info equality operator is constexpr in C++23?

Did you know that C++23 added Monadic operations for std::optional?

Did you know that C++23 added std::move_only_function?

Did you know that C++23 added basic_string::resize_and_overwrite?

Did you know that C++23 allows extended init-statement with alias-declaration in the for loop?

Did you know that CRTP can be implemented with C++23 Deducing this?

Did you know that Deducing this proposal has been voted out into C++23?

Did you know that C++23 added if consteval?

Did you know about C++23 feature which adds support for inheriting from std::variant?

Did you know about C++23 feature which removes unnecessary ()’s from C++ lambdas?

Did you know that C++23 added contains function to string_view?

Did you know that C++23 added is_scoped_enum type trait to detect whether an enum is scoped?

Did you know about C++23 proposal to add views::enumerate?

Did you know that C++23 permitts static constexpr variables in constexpr functions?

Did you know about proposal to add support for recursive lambdas?

Did you know about proposal to add Compile Time Regular Expressions?

C++20

Did you know that C++20 source_location can be used to get the member names?

Did you know that C++20's no_unique_address can be used to find unique types?

Did you know that C++20 added constinit keyword?

Did you know about C++20 std::next_permutation algorithm?

Did you know that C++20 added std::span?

Did you know that with C++20 you can pass concepts?

Did you know about C++20 is_layout_compatible_v type_traits?

Did you know that C++20 added support for Unevaluated asm-declaration in constexpr functions?

Did you know that C++20 added support for constexpr std::vector?

Did you know that C++20 concepts can be used to avoid implicit conversions?

Did you know that C++20 introduced coroutines? (co_await)

Did you know that C++20 introduced coroutines? (co_yield)

Did you know that with C++20 (constexpr containers) TMP can be achieved with STL?

Did you know about C++20 template specialization with concepts?

Did you know about introduced in C++20 object concepts?

Did you know that C++20 made std::string constexpr?

Did you know that C++20 added std::ranges::{all_of, any_of, none_of} algorithms?

Did you know that C++20 added support for floating point values as non-type template parameters

Did you know that C++20 added std::erase_if for std::map and std::vector?

Did you know that C++20 added __VA_OPT__ for comma omission and comma deletion?

Did you know that C++20 extends support for data time utilities?

Did you know that C++20 added type_identity which implements the identity metafunction?

Did you know that C++20 [[no_unique_address]] can be used to implement lazy/fast/memory efficient

Did you know that C++20 made typename more optional?

Did you know that C++20 std::to_array supports creating from string literals?

Did you know that C++20 added Using Enum which introduces the enumerator names of the named enumeratio

Did you know that C++20 added support for [[no_unique_address]] attribute?

Did you know that C++20 added support for constexpr new?

Did you know that C++20 added ostream_joiner that writes successive objects into the basic_ostr

Did you know that Formatted output has been accepted into C++20?

Did you know C++2X Pattern Matching can be used for run-time dispatching?

Did you know about C++2X Pattern Matching proposal?

Did you know about the proposal to add Non-terminal variadic template parameters?

Did you know about the proposal to add constexpr function parameters?

Did you know about Design By Introspection?

Did you know that you can customize formatter for your classes with std::format?

Did you know Non-Type Template Parameters (NTTP)?

Did you know that static reflection supports introspecting constructors?

Did you know that static reflection can be used to invoke functions with named parameters?

Did you know that static reflection can be used to implement row polymorphism?

Did you know that static reflection proposal for C++2X has mirror/value based interface?

Did you know that static reflection proposal for C++2X can reflect functions?

Did you know about static reflection proposal for C++2X?

Did you know about the proposal to make printf compile-time safe and with named arguments?

Did you know about proposal to introduce constexpr ternary operator?

Did you know about the proposal to add json support to the standard library?

Did you know about std::expected proposal for error handling?

Did you know that Lambdas in Unevaluated Context combined with Template Constraints (Concepts)?

Did you know that Lambdas in Unevaluated Context combined with Immediately Invoked Function Expression?

Did you know that Compile Time Regular Expressions support extracting matches?

Did you know about C++2X Pattern matching using is and as proposal?

Did you know that tuple can be implement just with lambdas?

Did you know that with concepts you can override a type?

Did you know about (rejected) proposal for homogeneous variadic function parameters?

Did you know that lambda expression is guaranteed to have a unique type?

Did you know what is the underlying type of NTTP string aka fixed_string?

Did you know that lambdas are const by default but can be mutable and keep state?

Did you know that concept can be passed via lambda expression?

C++17

Did you know that C++17 added Hardware interference size?

Did you know that the underlying visit implementation of std::visit has changed since GCC12+, Clang15+?

Did you know that run-time dispatching over type-list can be implemented many different ways?

Did you know that you can simplify boost.mp11 API with DSL?

Did you about C++17 std::index_sequence, std::make_index_sequence?

Did you know that C++17 added std::pmr::polymorphic_allocator?

Did you know that C++17 added std::forward_as_tuple and std::make_from_tuple and what’s the differ

Did you know that C++17 [[nodiscard]] attribute can be applied not only to function?

Did you know that C++17 structured bindings support to custom classes can be added?

Did you know about C++17 variadic using declaration?

Did you know that C++17 made exception specifications be part of the type system?

Did you know about C++2X proposal to add Multidimensional subscript operator?

Did you know that std::variant become valueless by exception?

Did you know about std::rank/std::rank_v type_trait to get the rank of the array?

Did you know that constexpr is strict about undefined behaviour (UB), object lifetime, etc?

Did you know about Policy Based Design?

Did you know about python's named tuples?

Did you know about typename erasure technique to reduce compilation times with templates?

Did you know that mapping types to values is a simple way to transition from compile-time to run-time?

C++14

Did you know that in C++ you can generate jump tables at compile-time?

Did you know that C++ allows to pass Pointer To Member Function via template parameter?

Did you know about typename erasure technique (via Strong/Opaque Typedefs) in C++?

Did you know about intrisincts to support SIMD (Single Instruction, Multiple Data) instructio

Did you know DRY (Don’t Repeat Yourself) comparisons pattern?

Did you know that you can implement a compile-time map with C++?

Did you know about use cases for type-based reserved decorator?

Did you know about Automatic Dependency Injection libraries such as DI?

Did you know that with Automatic DI production wiring can be overwritten for integration testing?

Did you know that with Automatic DI one can control how dependencies are being created?

Did you know about different ways of constructor Dependency Injection?

Did you know that the JSON standard does not specify that the insertion order of object elements?

C++11

Did you know that C++11 allows calling functions with reference-to-array parameters from an initialize

Did you know that C++11 added a numeric literal operator template?

Did you know the difference between fakes, stubs, mocks?

Did you know that you can inject singletons to improve testability?

Did you know about memoized for less types (more compile-time friendly) conditional_t?

Did you know about gtest.gmock mocking framework?

Did you know about methods to access the last element of variadic pack...?

Did you know that different overloads can have different specifiers?

Did you know that C++ allows accessing private members with friend injection?

Did you know about variadic aggregate initialization?

Did you know that default template arguments can be explored with template template arguments?

C++98

Did you know about virtual inheritance in C++?

Did you know that the layout of struct fields will affect its size/alignment?

Did you know that in C++ char, signed char and unsigned char are 3 different types?

Did you know about function-try-block and that exceptions caught inside that block are implicitly

Did you know that expression evaluation order is not specified?

Did you know that sizeof operator can be used for efficient math computation?

Did you know about different ways of iterating over objects?

Did you know about if/else hell anti-pattern?

Did you know you can pass an array by reference?

Did you know that ANSI/ISO C++ conforming programs must not rely on a maximum template depth?

Did you know wrapping an unqualified function name?

Did you know about compiler predefined macros assosicated with the compilation date/time?

Did you know about different ways of accessing C-style arrays by index?

Did you know that using-declarator can be used to manipulate the overload set?

C++-GNU

Did you know about gnu::vector_size extension?

Did you know about __builtin_dump_struct clang-extension which can nicely print a struct?

Did you know about [[gnu::cold]] function attribute to mark functions which are unlikely to be called?

Circle

Did you know that Circle supports Python's extended slice syntax for variadic packs?

Did you know that Circle Meta-model allows to convert string to a type?

Did you know that Circle Meta-model allows for applying normal STL for operations on @meta types?

Did you know about C++2X proposal for the Circle Meta-model for compilation-time meta-progr

cpp11

cpp14

cpp17

cpp20

cpp23

cpp98

Significant stargazers

(top 24 of 39)

Driss Guessous

277 followers · starred Feb 2021

mwish

620 followers · starred Dec 2024

tbeu

57 followers · starred May 2022

Guo Ci

31 followers · starred Dec 2021

Similar repos

AnthonyCalandra/modern-cpp-features

A cheatsheet of modern C++ language and library features.

21,904

federico-busato/Modern-CPP-Programming

Modern C++ Programming Course (C++03/11/14/17/20/23/26)

16,220

tvaneerd/cpp17_in_TTs

Descriptions of C++17 features, presented mostly in "Tony Tables" (hey, the name wasn't my idea)

1,202

CppCon/CppCon2019

Slides and other materials from CppCon 2019

1,256

mortennobel/cpp-cheatsheet

Modern C++ Cheatsheet

3,566

Caerind/AwesomeCppGameDev

A curated list of awesome C++ (mainly) things for Game Development. Inspired by awesome-... stuff.

2,090

Nekrolm/ubbook

C++ programmer's guide to undefined behavior

1,639

Light-City/CPlusPlusThings

C++那些事

43,532