Snippington C++ Ultimate

Visual Studio Code extension for Modern C++ code snippets.

Covers 302 snippets across C++11 through C++23, organized into basic, intermediate, and advanced levels.

All snippets use the prefix cpp: — just type it in any .cpp file to explore.

Basic Snippets

Program Structure

Prefix	Description
`cpp: hello`	Hello World program
`cpp: main`	Main function entry point
`cpp: main-args`	Main function with command-line arguments
`cpp: inc`	Include a standard library header
`cpp: inc-local`	Include a local header file
`cpp: header-guard`	Header guard with ifndef/define/endif
`cpp: pragma-once`	Pragma once header guard
`cpp: namespace`	Namespace declaration
`cpp: using-std`	Using namespace std directive
`cpp: using`	Using declaration for a specific symbol
`cpp: type-alias`	Modern type alias with using keyword

Variables & Types

Prefix	Description
`cpp: var`	Variable declaration with initialization
`cpp: auto`	Auto type deduction variable
`cpp: const`	Const variable declaration
`cpp: constexpr-var`	Compile-time constant variable
`cpp: static-var`	Static variable declaration
`cpp: ref`	Reference variable declaration
`cpp: const-ref`	Const reference variable declaration
`cpp: ptr`	Pointer variable declaration
`cpp: array`	std::array declaration
`cpp: c-array`	C-style array declaration
`cpp: string`	std::string variable declaration
`cpp: string-view`	std::string_view declaration (C++17)
`cpp: pair`	std::pair declaration
`cpp: tuple`	std::tuple creation
`cpp: optional`	std::optional declaration (C++17)
`cpp: optional-value-or`	Get optional value or default
`cpp: variant`	std::variant declaration (C++17)
`cpp: any`	std::any usage (C++17)

Enums & Structs

Prefix	Description
`cpp: enum`	Traditional enum declaration
`cpp: enum-class`	Scoped enum class (C++11)
`cpp: enum-class-typed`	Scoped enum class with underlying type
`cpp: struct`	Struct declaration
`cpp: structured-binding`	Structured binding declaration (C++17)
`cpp: typedef`	Typedef declaration

Control Flow

Prefix	Description
`cpp: if`	If statement
`cpp: if-else`	If-else statement
`cpp: if-elseif`	If-else if-else chain
`cpp: if-init`	If with initializer statement (C++17)
`cpp: ternary`	Ternary conditional operator
`cpp: switch`	Switch statement
`cpp: switch-init`	Switch with initializer (C++17)
`cpp: for`	Traditional for loop
`cpp: for-range`	Range-based for loop
`cpp: for-range-mut`	Mutable range-based for loop
`cpp: for-range-idx`	Range-based for with index counter
`cpp: while`	While loop
`cpp: do-while`	Do-while loop
`cpp: loop-infinite`	Infinite loop

Functions

Prefix	Description
`cpp: fn`	Function definition
`cpp: fn-decl`	Function declaration/prototype
`cpp: fn-constexpr`	Constexpr function
`cpp: fn-inline`	Inline function
`cpp: fn-nodiscard`	Function with [[nodiscard]] attribute
`cpp: fn-noexcept`	Noexcept function
`cpp: fn-overload`	Function overload example
`cpp: fn-default-params`	Function with default parameters
`cpp: lambda`	Basic lambda expression
`cpp: lambda-ret`	Lambda with explicit return type
`cpp: lambda-inline`	Inline lambda expression

I/O & Formatting

Prefix	Description
`cpp: cout`	Print to stdout with cout
`cpp: cout-nl`	Print to stdout with newline char
`cpp: cout-multi`	Print label and variable
`cpp: cerr`	Print to stderr
`cpp: cin`	Read input from stdin
`cpp: getline`	Read a full line from stdin
`cpp: file-read`	Read from file line by line
`cpp: file-write`	Write to file
`cpp: file-append`	Append to file
`cpp: print`	std::print (C++23)
`cpp: println`	std::println (C++23)
`cpp: format`	std::format string (C++20)

Error Handling & Assertions

Prefix	Description
`cpp: try-catch`	Try-catch block
`cpp: try-catch-all`	Try-catch with catch-all clause
`cpp: throw`	Throw an exception
`cpp: static-assert`	Compile-time assertion
`cpp: assert`	Runtime assertion

Casts & Utilities

Prefix	Description
`cpp: cast-static`	static_cast expression
`cpp: cast-dynamic`	dynamic_cast expression
`cpp: cast-reinterpret`	reinterpret_cast expression
`cpp: cast-const`	const_cast expression
`cpp: sizeof`	sizeof operator
`cpp: decltype`	decltype type deduction
`cpp: nullptr-check`	Nullptr check
`cpp: swap`	Swap two values
`cpp: minmax`	Get min and max of two values

Comments & Documentation

Prefix	Description
`cpp: comment-block`	Block comment
`cpp: doxygen-fn`	Doxygen function comment
`cpp: doxygen-class`	Doxygen class comment
`cpp: todo`	TODO comment
`cpp: fixme`	FIXME comment

Preprocessor

Prefix	Description
`cpp: ifdef`	Preprocessor ifdef block
`cpp: ifndef`	Preprocessor ifndef block
`cpp: define`	Preprocessor macro definition
`cpp: define-fn`	Preprocessor function-like macro

Intermediate Snippets

Classes & OOP

Prefix	Description
`cpp: class`	Basic class with constructor and destructor
`cpp: class-rule5`	Class following the Rule of Five
`cpp: class-rule0`	Class following the Rule of Zero
`cpp: class-inherit`	Derived class with public inheritance
`cpp: class-abstract`	Abstract class / interface
`cpp: class-final`	Final class that cannot be inherited
`cpp: virtual`	Pure virtual method declaration
`cpp: override`	Override virtual method
`cpp: friend`	Friend function declaration
`cpp: getter`	Const getter method
`cpp: setter`	Setter method

Constructors

Prefix	Description
`cpp: ctor-init`	Constructor with member initializer list
`cpp: ctor-explicit`	Explicit single-argument constructor
`cpp: ctor-delegate`	Delegating constructor
`cpp: ctor-copy`	Copy constructor
`cpp: ctor-move`	Move constructor

Operator Overloading

Prefix	Description
`cpp: op-copy-assign`	Copy assignment operator
`cpp: op-move-assign`	Move assignment operator
`cpp: op-stream`	Stream insertion operator overload
`cpp: op-equal`	Equality operator overload
`cpp: op-spaceship`	Three-way comparison operator (C++20)
`cpp: op-subscript`	Subscript operator overload
`cpp: op-functor`	Function call operator (functor)

Templates

Prefix	Description
`cpp: template-fn`	Template function
`cpp: template-class`	Template class
`cpp: template-multi`	Template with multiple type parameters
`cpp: template-variadic`	Variadic template function
`cpp: template-specialize`	Template full specialization
`cpp: template-partial-specialize`	Template partial specialization
`cpp: template-alias`	Template type alias
`cpp: sfinae-enable-if`	SFINAE with enable_if

Smart Pointers

Prefix	Description
`cpp: unique-ptr`	Create unique_ptr with make_unique
`cpp: shared-ptr`	Create shared_ptr with make_shared
`cpp: weak-ptr`	Weak pointer from shared_ptr
`cpp: weak-ptr-lock`	Lock weak_ptr to shared_ptr
`cpp: unique-ptr-deleter`	unique_ptr with custom deleter

STL Containers

Prefix	Description
`cpp: vector`	std::vector declaration
`cpp: vector-reserve`	Vector with reserve
`cpp: vector-push`	Push element to vector
`cpp: vector-emplace`	Emplace element at back of vector
`cpp: map`	std::map declaration
`cpp: unordered-map`	std::unordered_map declaration
`cpp: map-insert`	Insert element into map
`cpp: map-find`	Find element in map (C++17 if-init)
`cpp: map-contains`	Check if map contains key (C++20)
`cpp: set`	std::set declaration
`cpp: unordered-set`	std::unordered_set declaration
`cpp: deque`	std::deque declaration
`cpp: stack`	std::stack declaration
`cpp: queue`	std::queue declaration
`cpp: priority-queue`	std::priority_queue (max-heap)
`cpp: priority-queue-min`	Min-heap priority queue
`cpp: list`	std::list declaration
`cpp: forward-list`	std::forward_list declaration
`cpp: span`	std::span view (C++20)

STL Algorithms

Prefix	Description
`cpp: sort`	Sort container
`cpp: sort-custom`	Sort with custom comparator
`cpp: find`	Find element in container
`cpp: find-if`	Find element with predicate
`cpp: for-each`	Apply function to each element
`cpp: transform`	Transform elements to output container
`cpp: accumulate`	Accumulate/sum elements
`cpp: reduce`	Reduce elements with binary operation (C++17)
`cpp: count-if`	Count elements matching predicate
`cpp: any-of`	Check if any element matches predicate
`cpp: all-of`	Check if all elements match predicate
`cpp: none-of`	Check if no element matches predicate
`cpp: copy-if`	Copy elements matching predicate
`cpp: erase-remove`	Remove-erase idiom
`cpp: erase-if`	std::erase_if (C++20)
`cpp: unique`	Remove consecutive duplicates
`cpp: binary-search`	Binary search on sorted container
`cpp: lower-bound`	Lower bound on sorted container
`cpp: max-element`	Find max element in container
`cpp: min-element`	Find min element in container
`cpp: iota`	Fill container with incrementing values
`cpp: generate`	Generate values with generator function
`cpp: partition`	Partition container by predicate

Lambdas (Advanced)

Prefix	Description
`cpp: lambda-ref`	Lambda capturing all by reference
`cpp: lambda-val`	Lambda capturing all by value
`cpp: lambda-mutable`	Mutable lambda with state
`cpp: lambda-generic`	Generic lambda (C++14)
`cpp: lambda-recursive`	Recursive lambda using std::function

Error Handling (Advanced)

Prefix	Description
`cpp: exception-custom`	Custom exception class
`cpp: expected`	std::expected declaration (C++23)
`cpp: fn-expected`	Function returning std::expected (C++23)
`cpp: error-code`	Error code pattern

Iterators

Prefix	Description
`cpp: iter-loop`	Iterator-based loop
`cpp: iter-reverse`	Reverse iterator loop
`cpp: iterator-class`	Custom forward iterator class

Strings & Regex

Prefix	Description
`cpp: stringstream`	String stream usage
`cpp: stoi`	String to integer conversion
`cpp: to-string`	Number to string conversion
`cpp: regex-match`	Regex match
`cpp: regex-search`	Regex search
`cpp: regex-replace`	Regex replace

Utilities

Prefix	Description
`cpp: chrono-duration`	Measure execution time with chrono
`cpp: random`	Random number generation
`cpp: random-float`	Random floating-point number generation
`cpp: fs-path`	Filesystem path (C++17)
`cpp: fs-exists`	Check if path exists (C++17)
`cpp: fs-iterate`	Iterate directory entries (C++17)
`cpp: fn-ptr`	Function pointer declaration
`cpp: std-function`	std::function wrapper
`cpp: callback`	Callback type alias and registration
`cpp: scope-guard`	Simple scope guard pattern
`cpp: raii`	RAII resource wrapper class

Advanced Snippets

Concepts (C++20)

Prefix	Description
`cpp: concept`	Concept definition
`cpp: concept-arithmetic`	Simple concept with type trait
`cpp: concept-compound`	Compound concept with multiple requirements
`cpp: concept-fn`	Concept-constrained function
`cpp: requires-clause`	Function with requires clause
`cpp: concept-auto`	Abbreviated function template with concept
`cpp: requires-expr`	Requires expression

Ranges (C++20/23)

Prefix	Description
`cpp: ranges-view`	Ranges pipeline with filter and transform
`cpp: ranges-filter`	Ranges filter view
`cpp: ranges-transform`	Ranges transform view
`cpp: ranges-take`	Ranges take first N elements
`cpp: ranges-drop`	Ranges drop first N elements
`cpp: ranges-iota`	Ranges iota view
`cpp: ranges-sort`	Ranges sort algorithm
`cpp: ranges-find`	Ranges find algorithm
`cpp: ranges-for-each`	Ranges for_each algorithm
`cpp: ranges-zip`	Ranges zip view (C++23)
`cpp: ranges-enumerate`	Ranges enumerate view (C++23)
`cpp: ranges-chunk`	Ranges chunk view (C++23)
`cpp: ranges-to`	Ranges to container conversion (C++23)

Concurrency

Prefix	Description
`cpp: thread`	Basic thread with lambda
`cpp: thread-detach`	Detached thread
`cpp: jthread`	std::jthread with stop token (C++20)
`cpp: mutex-lock`	Mutex with lock_guard
`cpp: scoped-lock`	Scoped lock for multiple mutexes (C++17)
`cpp: unique-lock`	Unique lock (for condition variables)
`cpp: shared-mutex`	Shared mutex reader/writer pattern (C++17)
`cpp: condvar`	Condition variable pattern
`cpp: async`	std::async with future
`cpp: promise`	Promise and future communication
`cpp: atomic`	Atomic variable
`cpp: atomic-ops`	Atomic operations with memory ordering
`cpp: thread-pool`	Simple thread pool implementation
`cpp: semaphore`	Counting semaphore (C++20)
`cpp: latch`	std::latch synchronization (C++20)
`cpp: barrier`	std::barrier synchronization (C++20)

Coroutines (C++20)

Prefix	Description
`cpp: coroutine-generator`	Coroutine generator
`cpp: coroutine-task`	Coroutine task
`cpp: co-await`	co_await expression
`cpp: co-yield`	co_yield expression

Modules (C++20)

Prefix	Description
`cpp: module`	Module declaration
`cpp: module-import`	Module import
`cpp: module-partition`	Module partition

CRTP & Static Polymorphism

Prefix	Description
`cpp: crtp`	Curiously Recurring Template Pattern
`cpp: crtp-mixin`	CRTP mixin for comparison operators
`cpp: static-poly`	Static polymorphism via CRTP
`cpp: mixin`	Mixin pattern with variadic inheritance

Move Semantics & Forwarding

Prefix	Description
`cpp: move`	std::move
`cpp: forward`	Perfect forwarding factory function
`cpp: universal-ref`	Universal/forwarding reference function

Metaprogramming

Prefix	Description
`cpp: fold`	Fold expression (C++17)
`cpp: fold-binary`	Binary fold expression with init value (C++17)
`cpp: fold-print`	Fold expression for printing variadic args
`cpp: if-constexpr`	Compile-time if constexpr (C++17)
`cpp: if-consteval`	if consteval (C++23)
`cpp: fn-consteval`	Immediate function (C++20)
`cpp: constinit`	constinit variable (C++20)
`cpp: type-trait`	Static assert with type trait
`cpp: type-trait-custom`	Custom type trait with specialization
`cpp: tag-dispatch`	Tag dispatch pattern
`cpp: variadic-print`	Variadic template print function
`cpp: tuple-foreach`	Apply function to each tuple element
`cpp: index-sequence`	Index sequence for tuple iteration

Compile-Time Programming

Prefix	Description
`cpp: constexpr-map`	Compile-time lookup map
`cpp: constexpr-string`	Compile-time fixed string (NTTP helper)
`cpp: constexpr-fib`	Compile-time Fibonacci with constexpr
`cpp: constexpr-hash`	Compile-time string hash function
`cpp: constexpr-array`	Compile-time generated lookup table

Design Patterns

Prefix	Description
`cpp: singleton`	Thread-safe Meyers Singleton
`cpp: factory`	Factory method pattern
`cpp: observer`	Observer/Subject pattern
`cpp: builder`	Builder pattern with method chaining
`cpp: strategy`	Strategy pattern
`cpp: visitor`	Visitor pattern with std::variant
`cpp: state-machine`	Simple state machine pattern
`cpp: pimpl-header`	Pimpl idiom header declaration
`cpp: pimpl-impl`	Pimpl idiom implementation
`cpp: type-erasure`	Type erasure pattern
`cpp: policy`	Policy-based design pattern
`cpp: event-system`	Type-safe event/signal system

C++20/23 Features

Prefix	Description
`cpp: deducing-this`	Deducing this (C++23)
`cpp: op-multidim-subscript`	Multidimensional subscript operator (C++23)
`cpp: designated-init`	Designated initializers (C++20)
`cpp: spaceship-custom`	Custom three-way comparison operator
`cpp: source-location`	std::source_location for logging (C++20)
`cpp: compare-three-way`	Three-way comparison result handling
`cpp: expected-chain`	std::expected monadic operations (C++23)
`cpp: optional-chain`	std::optional monadic operations (C++23)
`cpp: overloaded`	Overloaded pattern for std::visit
`cpp: strong-typedef`	Strong typedef / named type pattern
`cpp: udl`	User-defined literal operator
`cpp: flat-map`	Flat map with ranges (transform + join)
`cpp: span-subspan`	Static subspan extraction

Attributes

Prefix	Description
`cpp: attr-likely`	Branch prediction hint [[likely]] (C++20)
`cpp: attr-unlikely`	Branch prediction hint [[unlikely]] (C++20)
`cpp: attr-no-unique-addr`	[[no_unique_address]] attribute (C++20)
`cpp: attr-deprecated`	[[deprecated]] attribute

Parallel Algorithms

Prefix	Description
`cpp: parallel-transform`	Parallel transform with execution policy (C++17)
`cpp: parallel-sort`	Parallel sort with execution policy
`cpp: parallel-for-each`	Parallel for_each with execution policy

C++ Standard Coverage

Standard	Features Covered
C++11	Move semantics, lambdas, smart pointers, enum class, auto, range-for
C++14	Generic lambdas, return type deduction
C++17	Structured bindings, if-init, fold expressions, std::optional/variant/any, filesystem, parallel algorithms
C++20	Concepts, ranges, coroutines, modules, jthread, semaphore/latch/barrier, spaceship operator, designated initializers
C++23	std::expected, deducing this, std::print, ranges::zip/enumerate/chunk, ranges::to, if consteval, multidimensional subscript

Installation

From VS Code Marketplace

Search for "C++ Ultimate Snippets" in the Extensions panel.

From VSIX

code --install-extension snp-cpp-ultimate-0.1.0.vsix

Usage

Open any .cpp file
Type cpp: to see all available snippets
Use Tab to expand and navigate through placeholders

Contributing

Contributions are welcome! Please open an issue or submit a pull request on GitHub.

License

MIT License - see LICENSE for details.