Understanding higher-order functions
The higher order function is the important property of Haskell, and it is also the common property of all functional languages, and the higher order function is actually the function of functions, which is the form of a function as a parameter of another function, which is the higher order function.
Let's take a look at an example of a function that takes a function and invokes it twice, expressed in a mathematica
I know, a lot (are there actually many ?) People will think that pure static strong functional language such as Haskell is too serious and abstract. It is only suitable for cold and hard scientific tasks. However, dear Paul Hudak (http://cs-www.cs.yale.edu/homes/hudak/), let us see in a speech named "Haskell and the arts, haskell, the original rigorous thinking,
Emacs for all emacstable of Contents
1. How to enable Chinese input in Emacs?
2. Is it possible to use version control tools like SVN, git, CVS ...?
3. How does I make Emacs recognize the version-controlled files?
4. How is the use of latex in Emacs?
5. Where can I get the configuration files o
Today, when Google searched for information, it accidentally found a funny image of the new version of language fans. In combination with an interesting blog, it was a perfect match. So, put them together. Create a backup file for favorites. Original link here: http://lukeplant.me.uk/blog/posts/why-learning-haskell-python-makes-you-a-worse-programmer/
Why Learning Haskell/Python makes you a worse
Programmer
Source Address: Haskell Learning-monadWhat is Monad
Haskell is a purely functional language, the advantage of pure function is safe and reliable. The function output is entirely dependent on the input, there is no implicit dependency, and its existence is as perfect as a mathematical formula. But the pure function is isolated from the external environment, even the most basic input and output can not be com
Emacs's first words: the comparison between Emacs and VimHalf a year ago, when I first started using Linux, I heard that Linux didn't use the IDE. It's all about using Vim/emacs. Scratched started Baidu, then did not know Google, looking for various tutorials, various statements. Finally, a conclusion that vim is better than Emacs is useful. Baidu paste the numbe
Emacs's first words: the comparison between Emacs and VimHalf a year ago, when I first started using Linux, I heard that Linux didn't use the IDE. It's all about using Vim/emacs.Scratched started Baidu, at that time still do not know with Google, find various tutorials, various statements. Finally come to a conclusion vimMore useful than Emacs. Baidu paste the number of vim more than
Frege is a purely functional programming language inspired by the Haskell language. The Frege program will be compiled into Java and run on the JVM. It is so similar to Haskell that some people call it Haskell on the JVM. The name of Frege is to commemorate the German mathematician, logic, philosopher Gottlob Frege.The main features of language
Pure Func
Frege is a purely functional programming language inspired by the Haskell language. The Frege program will be compiled into Java and executed on the JVM. It is so similar to Haskell. So that it was called Haskell on the JVM. The name of Frege is to commemorate the German mathematician, logic, philosopher Gottlob Frege.The main features of language
Pure F
first few elements maximum returns the list maximum, Minmum returns the minimum sum sum elem determines whether the element is in the list, Use infix expression 4 \elem ' [1,2,3,4] ' range operation using: To generate a large number of contiguous data, such as [1..100] can use the first two elements to represent the step, such as [1,3...100] generate 100 in the odd Haskell support an infinite list, such as [1,2..],
Brain Hole Time: why there are so many programming languages in the world, that is decadent capitalism in order to increase the majority of people's learning costs and the compilation of the principle is too popular, it is recommended that the University of all courses to eliminate the compiling principle, and swing the razor, all the programming language kicked, In addition to machine language, only two languages are left: Assembler and Haskell (esca
Haskell learning Summary
Here is a brief summary after learning "learn you a Haskell for great good ".
1Haskell basic knowledge
2Haskell important data structure-list
3Haskell Common Data Structures
4Haskell type
5Haskell important concepts-Functions
6Haskell important programming modes-functor, applicative functor, monad
Conclusion
This note is a very simple summary and introduces some b
"System Environment"
Windows Server 2008 R2,haskell Platform 2013.2.0.0,GHC 7.6.3,cabal 1.16.0
"Action Steps"
1. Install Windows version Haskell Platform (does not support Windows Server), Haskell Platform integrates cabal (equivalent to. NET Msbuild+nuget), GHC (Glasgow Haskell Compiler,
The first introduction of emacs-shell mode
Shell mode is an interesting mode in Emacs. Generally, there are three main ways to run shell in Emacs. One is to use Emacs terminal emulator. This mode basically simulates a terminal in Emacs and then runs the subshell in the termi
Emacs's first words: the comparison between Emacs and VimHalf a year ago, when I first started using Linux, I heard that Linux didn't use the IDE. It's all about using Vim/emacs. Scratched started Baidu, then did not know Google, looking for various tutorials, various statements. Finally, a conclusion that vim is better than Emacs is useful. Baidu paste the numbe
Haskell in the real world)
Pricing: ¥88.00Member price: ¥66.00 (off)This book Details View: http://www.china-pub.com/196399
Haskell in the real world is a quick and easy-to-use guide that introduces you to the increasingly popular programming language. You will learn how to apply Haskell to different practices, from short scripts to demanding large applications.
In this popush development process, I am responsible for adding the Haskell file option in popush and ensuring that it can run normally. When I received this task, I felt a bit like a fantasy, far exceeding my personal abilities. Later in the development process, with the help of Li yinghui, we could also communicate with other groups of students, which provided positive and favorable factors for the completion of our tasks.
The first difficulty in
C + + Template programming implements Haskell's function pattern matching feature [figure]:The great god Bartosz Milewski wrote an article in 2009, "What Does Haskell has to does with C + +?", using C + + to implement some of the features of Haskell's functional programming language. "Portal at the end of the text"There is an example of this:Code 11.template2.public:
Staticconstint value = n * fact4.};
6.template7.public:
Staticconstint value
PrefaceMore and more people use emacs as development tools. even skype, gmail, and Douban FM can use emacs. as a product development, many plug-ins are certainly used, and some shortcut keys are set to improve development efficiency. I used prelude for a long time and found the following problems:For example, to enable python support, you need to remove the annotation like python in the prelude-modules.el.I
Algebraic Data Types
In the previous chapter, we talked about some built-in Haskell types and typeclass. In this chapter, we will learn the construction types and typeclass methods.
We have seen many types, suchBool,Int,Char,MaybeWait, but in Haskell, how should we construct our own types? Good question. One way is to useDataKeyword. Let's take a look.BoolDefinition in the Standard Library:
dataBool=False|T
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