chatbot learns

For Loop-Traditional*for parentheses can be omitted*You can only use BOOL as a conditional statement*If only the curly braces for the after of the instruction for ' cannot ' be omitted*the three arguments after the for can be omitted, and if the loop hold statement is omitted, the default is True for(var i =0; I Ten; i++) {print (i)} forvar i =0; I Ten; i++{print (i)}for loop-Swift* Closed interval: Contains all values within the range a...b for example:1...5* Half closed interval: Contains the

). Description}29. The proxy method is implemented in the extensionAs! ()? and! Judging by the previousLet Indexpath = self.tableview.indexpathforselectedrow! Gets the Indexpath of the selected cell32. Click on the cell via SB connection, get the purpose controller let DESVC = Segue.destinationviewcontroller as!... via Prepareforsegue33. Get random number ()%2534. Assignment of data, overriding Didset, equivalent to the Set method overridevar P:person? {didset{Property assignment of its own valu

=" Wkiol1ffhn6rcjdiaaapybatb84043.jpg "/>jquery Asynchronous request2. Press F12 in Google Chrome to enter debug mode. In the console, enter$ (' #loginform '). The serialize () function is to get all the values in the form$: means jqueryLoginForm: Indicates selectorID: is the unique identifier of the HTML element, the ID of the same page cannot appear with duplicate name650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/86/9A/wKiom1fFH1jDFXQ-AABYI2acY2s751.png "title=" C4c747d3-0e5e-4d71

= [LocalFilename rangeofstring:@"HTML"];NsrangeHtmrange = [LocalFilename rangeofstring:@"htm"];NsrangePngrange = [LocalFilename rangeofstring:@"PNG"];if(Htmlrange. location!=Nsnotfound|| Htmrange. location!=Nsnotfound) {NSString*mime = [[NSStringalloc]initwithformat:@"Text/html"];returnMime }Else if(Pngrange. location!=Nsnotfound){NSString*mime = [[NSStringalloc]initwithformat:@"Image/png"];returnMime }NSString*mime = [[NSStringalloc]initwithformat:@"Unknown"];returnMIME;}@endBecause the storyb

(multiple windows are displayed at the top and bottom levels, or on the upper and lower sides), display levels, event handling. View: is responsible for controlling how the specific view area and the event handling within the view area are drawn.Second, Window SystemThe Windows management of Android is Client/server (c/s) mode.Clientactivity opens a session (opens the Iwindowsession Aidl interface) and joins the window to the WindowManager via this interfaceServer adds the window child to the W

Variable declaration variable1 # !/usr/bin/env python 2 3 4 " Bourbon "The code above declares a variable named: Name, and the value of the variable is: "Bourbon"The role of a variable: A variable has an identity meaning, which refers to what is stored in an address in memoryRules for variable definitions:· Variable names can only be any combination of letters, numbers, or underscores· The first character of a variable name cannot be a number (but you can start with "_") and a space cannot app

MySQL learns basic MySQL database operations on the fifth day. This article studies the basic operations of MySQL databases. Do not miss this article. The following command lines are used in Windows 64-bit operating systems. Before learning, Let's explain the meanings of some symbols in the MySQL syntax format: (1) brackets ([]) indicate that they both exist or do not exist. They are optional parameters. For example:SHOW {DATABASES | SCHEMAS} [LIKE 'P

methods.2.1 Interface SeparationIn the case of interface separation, the person class depends on the car interface and the specific model of the vehicle, and is responsible for creating a specific model of the car.2.2 Factory modeIn order to reduce the coupling between the person class and the specific car, the Factory mode is used to provide the implementation object of the interface car.2.3 Dependency InjectionThe spring container relies on the person class and the car interface, as well as t

C ++ learns constructor and constructor functions. In the C ++ class, there will be one or more constructor, one destructor, and one value assignment operator. Even if the classes we define do not display and define them, the compiler will declare a default constructor, A destructor, and a value assignment operator. For example: 1 // declare an Empty class 2 class Empty {}; 3 4 // but this Empty class is equivalent to the following class 5 class Empty

Tom learns IOS (4) half an hour of UI to get Tom and iosui Let's talk about the effect first. Project source material: Tomcat game code iOS material http://blog.csdn.net/u013357243/article/details/44457357 Tomcats, once popular, are actually quite easy to create.All functions are implemented. (The key is materials. You can add me without materials)New users can quickly complete tom's ios app.I have done android, and said that the android party is ver

Python learns the sequence of data types, and python Data Types I. Sequence (this article uses python3.5)######################################## ##################### List and tuples are all Sequences# Features:#1. You can obtain specific elements through indexes.#2. You can obtain a small sequence through the slice operation.# Basic operationsStr = "abc ";Str1 = "efg ";Print (len (str); # obtain the sequence lengthPrint (str + str1); # concatenate S

The python module learns logging and the python module logging. 1. Simply print logs to the screen Import logginglogging. debug ('this is debug message') logging.info ('this is info message') logging. warning ('this is warning message'): WARNING: root: This is warning message By default, logging prints logs to the screen at the Log Level of WARNING;The log level relationship is: CRITICAL> ERROR> WARNING> INFO> DEBUG> NOTSET. You can also define the lo

Java learns forty-three (DOM4j parses XML) and dom4jxml from scratch1. Create XML // Create XML public static void gernatorXML () {// create Document Object Document doc = incluenthelper. createDocument (); // create the root node students Element studentsElement = doc. addElement ("students"); // create a subnode student Element studentElement1 = studentsElement. addElement ("student"); // Add the ID attribute studentelement1.addattriement ("id", "10

The instance learns JavaScript to read and write cookies, and uses javascriptcookie. First, let's take a brief look at cookies. In the process of webpage creation, we often need to pass information from one page to another. At this time, we need to use the cookie Mechanism in JavaScript. Simply put, cookies provide a convenient way to store a small amount of data on users' computers and obtain them remotely, so that the website can save some details,

Fail!")BreakElif Guess_number > Lucky_number:Print ("Your input number to Big")Loop_count + = 1Elif Guess_number Print ("Your input number to Small")Loop_count + = 1def Third_way ():"" This is the third way to achieve this:1, with for loop;2, no separate definition of the count variable;3, Guess_number in for internal; optimal Solution."""Global Lucky_numberFor I in range (3):guess_number = int (input ("input Number:"))if Guess_number = = Lucky_number:Print ("you are Right!")Breakelif i = = 2:P

("Balabalabalabala") writes strings, writes sequentiallyTraversal: 1. On a tall, fast way:Count = 0For lines in F:f is a file handle, an iteratorPrint (line)Count + = 1Traverse 2. The way to make the memory explode: You can play it by yourself.For Index,line in Enumerate (F.readlines ()):Print (index, line)Some other methods of egg-ache: F.encoding the encoding of the file F.fileno () The file handle number, operating system maintenance F.isatty is not a terminal devic

much the same. So, which one should I use?Introduce an official explanation. It is said that the "id" and "class" Settings are unique, class is universal. So when we use them, we have to follow this feature. ID is not repeatable, class is reusable, ID can find a unique label on the page, and class can be multiple tags using the same style provides the possibility of li a:hover:not(.active)What the hell is this long list of?Let's have a 1.1-point analysis.First li a of all, this me

); } }); } public class Loginclicklistener implements View.onclicklistener {@Override the public void OnClick (View VI EW) {Final String code = Sms.gettext (). toString (). Trim (); Name = Edit_name.gettext (). toString (). Trim (); PWD = Edit_pwd.gettext (). toString (). Trim (); if (Name.equals ("")) {Edit_name.requestfocus (); } else if (Pwd.equals ("")) {Edit_pwd.requestfocus (); } else if (Code.equals ("")) {Sms

..... Operator... Operators are methods used in ES6 to deconstruct arrays, which can be used to quickly get the parameters of an array, such as:Let [Num1, ... nums] = [1, 2, 3];console.log (NUM1);1console.log (Nums); [2, 3]10. Ternary operatorsThis operator should be familiar to everyone, in the case of dictation can simplify the wording of if else, such as:Let E = true, F = ";" if (e) {f = ' man ';} else {f = ' woman ';}Equal to E? f = ' man ': f = ' woman ';ConclusionThis article only lists t

condition, otherwise returning false, similar to | | Comparisons, such as:lettruefalse}];let// 只要一个为true，即为trueconsole// true6.every ()every method is used to iterate through an array, triggering a callback function after each element, and returning false if a condition is not met , otherwise returns true, similar to the comparison, for example: lettruefalse}];let// 只要一个为false，即为falseconsole// false7. ~ ~ operator~ symbol is used in JavaScript with the function of bitwise negation ~ ~ ~ two ti