Tag Archive for: Haskell

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timeline

C++17: New Parallel Algorithms of the Standard Template Library

May 1, 2017

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The idea is quite simple. The Standard Template (STL) has more than 100 algorithms for searching, counting,…

optional

Monads in C++

February 10, 2017

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Monads in C++? What a strange name for a post. But it's not so strange. With std::optional, C++17 gets…

typeclass

Concepts

February 8, 2017

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We stay in the year 2020. With high probability, we will get concepts. Of course, waterproof statements…

lazy

The New Ranges Library

February 5, 2017

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A small-time jump, and we are in the year 2020. C++ will get - as far as the future is predictable -…

foldingExpressions

Fold Expressions

February 4, 2017

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With fold expressions, you can implement Haskell functions foldl, foldr, foldl1, and foldr1 directly…

CharakteristikRecursionEng

Recursion, List Manipulation, and Lazy Evaluation

February 1, 2017

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The remaining three characteristics of functional programming are told quite quickly: Recursion, manipulation…

Pure Functions

January 30, 2017

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Pure functions are pretty similar to mathematical functions. They are the reason that Haskell is called…

CharakteristikeImmutableDataEng

Immutable Data

January 28, 2017

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A key to purely functional languages is that their data are immutable. Therefore, assignments such as…

timeline.FunktionalInCpp17Cpp20Eng

Functional in C++17 and C++20

January 21, 2017

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Which functional feature can we expect with C++17, and for which functional feature can we hope with…

Latest news

std::execution: SenderDecember 16, 2024 - 11:25 am
std::execution offers three types of senders: factories, adapters, and consumers. I’ll take a closer look at these today. Most of the following content is from proposal P2300R10. I will try to represent it more concisely. Sender Factory A sender factory is an algorithm that takes no senders as parameters and returns a sender. execution::schedule execution::sender […]
std::execution: Composition of SendersDecember 9, 2024 - 10:25 am
Most sender adaptors are composable using the pipe operator. Let me start with a simple example of composition with the pipe operator. Instead of the nested function calls call1(call2(input)) you can write call1 | call2(input) or even: input | call1 | call2 Function composition Okay, this example was straightforward. Let’s do something more complicated. Proposal […]
std::execution: Inclusive ScanDecember 2, 2024 - 10:30 am
Inclusive scan solves problems related to range queries, such as calculating the sum of a range of elements in an array. It is also used in range minimum queries and various other algorithms. Before I present the asynchronous inclusive scan, I introduce the inclusive scan, aka prefix sum. Prefix Sum In computer science, the prefix […]
std::execution: Asynchronous AlgorithmsNovember 25, 2024 - 9:06 am
std::execution supports many asynchronous algorithms for various workflows. Presenting proposal P2300R10 is not easy. First, it is very powerful, and second, it is very long. Therefore, I concentrate on specific aspects of the proposal. What are the priorities of this proposal? Priorities The terms execution resource, execution agent, and scheduler are essential for the understanding […]
std::executionNovember 18, 2024 - 9:03 am
std::execution, previously known as executors or Senders/Receivers, provides “a Standard C++ framework for managing asynchronous execution on generic execution resources“. (P2300R10) Side Note Change of plans. My original plan was to present the C++26 library after the core language. However, the implementation status of the library is not good enough. Therefore, I decided to continue […]
C++26 Core Language: Small ImprovementsNovember 4, 2024 - 8:34 am
There are more small improvements in the C++26 language, which you should know. static_assert extension First, here’s the syntax of static_assert in C++11: static_assert(compile time predicate, unevaluated string) With C++26, the string can be a user-defined type having the following properties: static_assert can now be used with a format string. Here’s a nice example from […]