Monad explained in one picture

Picture environment If you need to include simple diagrams or figures in your document, the picture environment may be helpful. This article describes circles, lines, and other graphic elements created with LATEX. Contents 1 Introduction 2 Combining

Android USB Connections Explained: MTP, PTP, and USB Mass Storage Older Android devices support USB mass storage for transferring files back and forth with a computer. Modern Android devices use the MTP or PTP protocols — you can choose which one you

Introduction My wife Farhana wants to resume her career as a software developer (she started her career as a software developer, but couldn't proceed much because of our first child's birth), and these days, I am trying to help her learn Object Orien

In this fourth and last part of my monad tutorial, I will write about monad transformers. I will deal with only one of them, but it’s a start. I will also cover the probability monad, and how it can be extended using a monad transformer. Basically, a

In the first part of this tutorial, I have introduced the two most basic monads: the identity monad and the maybe monad. In this part, I will continue with the sequence monad, which will be the occasion to explain the role of the mysterious m-result 

How I explained OOD to my wife Learning Object Oriented Design principles through interesting conversations. Introduction My wife Farhana wants to resume her career as a software developer (she started her career as a software developer, but couldn't

HDU 1828 Picture 题目链接 题意:给定n个矩形,输出矩形周长并 思路:利用线段树去维护,分别从4个方向扫一次,每次多一段的时候,就查询该段未被覆盖的区间长度,然后周长就加上这个长度,4个方向都加完就是答案 代码: #include <cstdio> #include <cstring> #include <algorithm> using namespace std; const int N = 5005; int n; struct Rec { int

Monad Reader就是一种函数的组合.在scalaz里函数(function)本身就是Monad,自然也就是Functor和applicative.我们可以用Monadic方法进行函数组合: 1 import scalaz._ 2 import Scalaz._ 3 object decompose { 4 //两个测试函数 5 val f = (_: Int) + 3 //> f : Int => Int = <function1> 6 val g = (_: Int) *

/* ID: modengd1 PROG: picture LANG: C++ */ #include <iostream> #include <stdio.h> #include <memory.h> #include <vector> #include <algorithm> using namespace std; int N; struct edge { int y,x1,x2; bool isbegin; bool friend ope