seven languages in seven weeks

Seven weeks and seven languages -- Erlang's second day and seven weeks of erlang's self-studyKey-value pairs Question: consider a list of key-value tuples, such as [{erlang, "a functinal language"}, {ruby, "an OO language"}]. Write a function that accepts the list and key as parameters and returns the value corresponding to the key. Get_value (Map, Key)-> elemen

Ah, it took a week to learn Io language because I was busy writing a draft of the oauth2.0 Server framework last week. The answer to this exercise is followed by seven weeks and seven languages: understanding a variety of programming patterns; answers to the exercises after Ruby class I/O is a prototype language, similar to Javascript, and does not distinguish between classes and objects. All things are obj

2058.2 First day: Logic 2068.2.1 expressions and Basic Types 2068.2.2 Function 2088.2.3 Tuples and Listings 2118.2.4 Generating List 2148.2.5 Philip Wadler Interview 2178.2.6 what we learned in the first day 2188.2.7 First day Study 2188.3 Day two: The extraordinary power of Spock 2188.3.1 Higher order function 2198.3.2 Partial application function and Curry 2208.3.3 Lazy Evaluation 2218.3.4 Simon Peyton-jones Interview 2238.3.5 What we learned the next day 2248.3.6 Next day Study 2258.4 Day Th

not know what the relationship is, is it implemented by itself? 2. Dynamic hot plugging and high stabilityDynamic languages all have hot plug-in functions, which is the biggest advantage of dynamic languages. But Erlang seems to be compiled and executed. Can the systems that reference this module be aware of it in a timely manner?For stability, the language core may be relatively small and the microkernel

Static languageWhen you write code, you must specify a specific type of language for the variable. such as Java, C + +Dynamic languageInstead of specifying an explicit type for a variable when writing code, the interpreter determines the type of the variable at run time, based on the usage of the variable. such as Python, JavaScript# python's dynamic characteristics m = ten'hello'print m #print ' Hello 'Strongly typed languagesThe variable must have a certain type. such as Java, C + +, Pytho

Java specifies a date, such as the number of weeks, the number of weeks, and the number of weeks in java.Public static void main (String [] args) throws ClassNotFoundException,IOException, ParseException {SimpleDateFormat dateFormatter = new SimpleDateFormat ("yyyy-MM-dd ");String str = "2015-2-8 ";System. out. println ("str =" + str );Date date = dateFormatter.

Recently, I have been learning about the extremely interesting logic of PROLOG.Programming LanguageIt is completely different from the imperative programming language. Prolog is declarative. I personally think it is more like a DSL language and

Write Java todayCodeIt is very interesting to find a ruby feature, that is, calling any method has a return value. In JavaBean, call the Set Method and return void. to initialize an object, you must write multiple statements. For example Help

Java tutorial-deal with Java's 10 methods in a few weeks, java weeks Java tutorial-10 Java methods in a few weeks Do not confuse Java with JavaScript. The goal of Java is "one compilation and debugging everywhere" (Er, no, it is "running everywhere "). Simply put, Java programs can run directly on any device. 　　JavaWhat is language? Whether we realize it or not,

I. Dynamic languages and Static languages1.We often speak of moving, static language, usually refers to:Dynamic type language dynamically Typed LanguageStatic type language statically Typed LanguageThere may also be: dynamic, static programming language dynamic\statically programming Language2. Dynamic Type language: The language that examines the type of data during runExample: Ruby\pythonSuch languages ar

PHP gets a few weeks a year and a weekly start date and end date, a few weeks start date Recently, a project was taken, with one requirement being PHP to get a few weeks a year and a weekly start date and contact date. Find some information on the Internet is not appropriate, so I made a copy, the following two ways to achieve PHP to obtain a few

Java implements the input of a time period and the corresponding number of weeks to obtain the date of these weeks in this time period Recently, I have encountered a problem. For a given period of time and a specific week, I need to obtain all the days of the given week in this period of time. For example, get the dates of all Monday and Tuesday from. Package com. cc. common;Import java. text. ParseExceptio

Recently, I had a problem with the completion of the establishment. For a given time period and a specific week, I need to get the date of all the given weeks in this time period.For example, get all the Monday and Tuesday dates from 2015-01-01 to 2015-01-21.Package Com.cc.common;Import java.text.ParseException;Import Java.text.SimpleDateFormat;Import java.util.*;public class Weekdayutil {/*** Enter a time period for a date, and the corresponding day

Requirements: According to the date of the days, weeks, weeks Train of thought: try to write a date class without Java encapsulation, attributes: Year, month, day, first to determine whether the date is legal, First function Calculation days: The month before the one months and the first month of the difference between days, in addition to the current month to the number of days; The second function calcula

Python 68th days -- 12th weeks, 68th days, 12th weeks Subject: Requirements: User Roles, lecturers, and trainees. After logging on to a user, you can perform the following operations based on different roles:Instructor ViewManage the class. You can create a class and add the student to the Class Based on the QQ number of the student.You can create a course record for a specified class. Note that a course

11 weeks (number of replies) and 11 weeks /* * Copyright (c) 2014, computer College, Yantai University * All rights reserved. * File name: test. cpp * Author: Wang Zhong * Completion date: January 1, November 10, 2014 * Version No.: v1.0 * * Problem description: determines whether the parameter is a return number; * Input Description: enter a number; * Program output: determines and outputs whether the numb

13th weeks-polymorphism-Project 1-animals, 13th weeks 1- /** Copyright (c) 2014, School of Computer Science, Yantai University * All rights reserved. * file name: test. cpp * Author: Liu Chang * Completion Date: July 15, May 30, 2015 * version number: v1.0 ** Problem description: 1. According to the prompt of the given main () function and running result, design related classes, observe the running results

PHP calculates a time period that has several weeks and a certain time for the first week of the year function Date_default_timezone_set (' PRC '), function Count_weeks ($startDate, $endDate = ") {//start time $startDate = Date (' y-m-d ', $st Artdate); End Time if (empty ($endDate)) {$endDate = date (' y-m-d '); }else{$endDate = Date (' y-m-d ', $endDate); }//span of days $n = (Strtotime ($endDate)-strtotime ($startDate))/86400; Judging, the sp

Optional reading in 11th weeks 3, Optional reading in 11th weeks # Include Running result:

Week number Professional Learning Goals Study time New Line of code Blog post Volume Humanities Learning Knowledge Summary 1 1 Zhou NBSP; master the definition and basic terminology of the graph in the data structure and the data type of the graph. 6 + 0 learn about ui knowledge. understand the basic concept and basic operation of the diagram. 1 2 Week