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Results tagged with c++
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user 137260
C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language. This tag should be used for any question which requires knowledge or expertise with the C++ programming language. This is a general tag which is used for any of the C++ language standards (C++98, C++11, C++17, etc.). The question should identify the compiler being used, the operating system, and which of the C++ standards is being targeted.
11
votes
2
answers
5k
views
C++17 saturating integer (arithmetic) type library
I wrote a C++ library to provide extra signed and unsigned integer types that saturate in overflow situations. It's in proof of concept stage and I'd love to get some feedback on it.
A short usage de …
- 813
2
votes
2
answers
420
views
C++ distributed enumeration alternative
Application: replacing enum type / description tags in modular software, allowing adding new enum values without updating one definition.
Say we have a video processing pipeline not unlike gstreamer. …
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10
votes
1
answer
654
views
C++ library to compile-time merge sets to a single array
I built this small library to create a compile-time assembled array from several hard-coded sequences (of unequal length) of a type T:
mergeable_set.hpp
#pragma once
template <typename T>
class mer …
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5
votes
1
answer
121
views
C++ library with tools for (arithmetic) type manipulation and mixing
Broken out from a previous question (C++17 saturating integer (arithmetic) type library) is a small C++17 header-only library to deal with issues that arise working with arithmetic where signed, unsig …
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5
votes
3
answers
1k
views
C++ choose between runtime and compile time implementation functions
I wrote a small wrapper function to choose between runtime (std) sqrt and a constexpr version, as a continuation of the vector class I published here earlier:
C++ mathematical n-dimensional vector te …
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5
votes
1
answer
934
views
C++ mathematical n-dimensional vector template using fold expressions
I'm writing a template to unify a few mathematical vector types I was using. The goal is low overhead, constexpr where possible and generic utility functions built-in.
Normal usage would be like this …
- 813
2
votes
1
answer
1k
views
C++ generic, multi-dimensional linear interpolation template
Use-case in a nutshell: Interpolate fixed-sized data (a lookup table) that provides output values for combinations of a (fixed) number of inputs. The appropriate scaling is done externally, each axis …
- 813
4
votes
1
answer
516
views
C++ Calculate euclidean distance between tuples, for specified indices
I wrote a small utility function that will take two tuples and returns the Euclidean distance for the given indices only:
#include <cmath>
#include <tuple>
namespace {
template <typename T> cons …
- 813
2
votes
1
answer
443
views
C++ sum and averaging functions for arrays and argument sets
Here are two sets of variadic C++ functions to do fast summing and averaging of arrays (plain & std::array) or argument sets, (re)written as part of my generic toolbox.
The sum functions are pretty g …
- 813
10
votes
2
answers
7k
views
C++ Bit shift whole array (left)
For an embedded project I want to shift a (byte) array left by a certain amount of bits. I've built this template function to do so:
template <typename T>
constexpr void shift_array_left(T *arr, cons …
- 813
2
votes
C++ choose between runtime and compile time implementation functions
Based on Toby Speight's answer I went ahead and converted this to a generic template / utility function. The added checks provide a fallback to the runtime function if the required features aren't pre …
- 813
9
votes
3
answers
2k
views
C++ edit distance / string similarity function based on the Jaro-Winkler algorithm
I wrote a short library function, based on an example from Rosetta, to compare two strings and determine similarity, using Jaro-Winkler.
A short copy-paste ready example:
main.cpp
#include <string> …
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1
vote
2
answers
460
views
Map a set of types to unique IDs and runtime reinterpret back from ID and pointer in C++17
I wanted to create a relatively universal way of serialising an object, by doing a memcpy and generating a unique type ID. Stored together they can be used, for example, by another thread to restore a …
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3
votes
2
answers
250
views
Variadic function to find the first matching (string) argument in a larger array
Playing around with parsing a data buffer I wrote a small search function to find the first complete match out of a set of (string) arguments.
The (simplified) buffer class with the find function:
/ …
- 813