chatbot learns

Using system;using system.collections.generic;using system.linq;using system.text;using System.Threading.Tasks; Namespace delegatedemo1{class Program {static void One () {Console.WriteLine ("one"); throw new Exception ("Error in one"); } static void () {Console.WriteLine ("n"); } static void Main (string[] args) {string mid = ", middle part,"; /*funcC # Lambda learns a

variable of its underlying type, and then invoke the virtual method of the underlying type.2. Implemented through an interface. At run time, build an instance of the type, place a reference to it into a variable of its interface type, and then invoke the virtual method defined by the interface.3. Implemented by a delegate. Let the type implement a method whose name and prototype match a delegate that is known at compile time. Constructs an instance of the type at run time, then constructs an in

.stringReplace functionsfunction StringReplace (const S, Oldpattern, newpattern:string;Flags:treplaceflags): string; Rfreplaceall: Replace AllRfignorecase: Ignoring caseExamplevar astr:string; begin AStr: = ' This was a book, not a pen! '; ShowMessage (StringReplace (aStr, ' a ', ' two ', []));//this is the two book, and not a pen! only replaces the first conforming string showmessage ( StringReplace (ASTR, ' A ', ' both ', [Rfreplaceall]));//this is the book, and not both pen!

Thinkphp learns and uses the verification code to accidentally make a mistake.First look at the code: 1 $ (". verify_img "). click (function () {2 var timenow = new Date (). getTime (); 3 var url = "{: U ('index/loginverify ')} t =" + timenow; 4 alert (url); 5 $ (this ). attr ("src", url) 6}); the above Code causes the verification code to be clicked to switch, and the verification code image cannot be displayed. Let's look at the following code: $ (

I T O B J E C T 0 to the calling thread. But just before the function returns, the event will be set to the non-notification state, which is the side effect of a successful wait.This side effect will be used to automatically clear the kernel object because it is one of the rules defined by the M i c R o s o f t for this type of object. Other objects have different side effects, and some objects have no side effects at all. Process and thread kernel objects have no side effects at all, i.e. wait

superclass with "," delimited(1) using Super-classClass Filter:def init (self):self.blocked = []def filter (self, sequence):return [x for x in sequence if x not in self.blocked]Class Spamfilter (Filter):def init (self):self.blocked = [' SPAM '](2) See if a class is a subclass of another class, using Issubclass>>> Issubclass (Spamfilter, Filter)Ture>>> Issubclass (Filter, Spamfilter)False(3) If you want to know the base class of a Class (you), you can use its special properties __bases__>>> clas

following is an error:intconst_castint> (i);(4) You can also convert a const type* type to a type* type or convert a const type to a type type by using a forced type conversion in the traditional C language. But the use of const_cast will be better, because const_cast writing complex (reminding the ape not to easily convert), the conversion ability is weak, the purpose is clear, easy to error, easy to check the bug, and C-style forced type conversion ability is too strong, the risk is greater.R

Python learns Regular Expressions and python regular expressions. I. re Module 1. re. match # match from the starting position. If match () is not started, none is returned. Syntax: re. match (pattern, string, flags = 0) Pattern Matched Regular Expression String The string to be matched. Flags A flag, used to control the matching mode of regular expressions, such as case-sensitive or multi-row matching. 2. re.

The first jquery program123456 bgcolor= "Blue" > Ready () is different from onload and can have more than one registration event, and onload can only load one registration event.OnLoad is not triggered until all parts of the page have been loaded. Ready () is when the DOM is loaded and will be triggered without waiting for the page elements such as images to be loaded. So ready is earlier than onload.You can convert Window.load to jquery objects if the registration event must depend on when th

, respath._secondfile); if(Event.current.type = = Eventtype.dragupdated | | Event.current.type = = eventtype.dragexited) secondrect.contains (Event.current.mousePosition)) { if(Draganddrop.paths! =NULL DragAndDrop.paths.Length >0) { stringSfxpath = draganddrop.paths[0]; if(!string. IsNullOrEmpty (sfxpath) Event.current.type = =eventtype.dragupdated) {Draganddrop.acceptdrag (); Respath._secondfile=Sfxpath; }}} guilayout.endhorizontal (); Editorg

Date object.These are the references: W3school (http://www.w3school.com.cn/jsref/jsref_obj_date.asp)Assuming you need to use it directly ~ ~Here another inference is whether the function of a leap year I wrote myself:function Getboolyear (year) {var boolyear;if (year%400 = = 0 | | (year%100! = 0 year%4 = = 0))) {boolyear = true;} Else{boolyear = false;} return boolyear;}Depending on whether it is a leap year, you can also know how many days a month is. Functions such as the following:function

Serialization of Tools have json,pickle.Used to convert complex data types into strings.#json必须是 the Key,value data type.#pickle仅限python使用支持python大部分数据类型.2. Log module3. Execute the Command moduleThe relevant modules and functions that can execute shell commands are: Os.system os.spawn* os.popen*--Waste popen2.*--Waste commands.*-Discarded, removed in 3.x The functions of the relevant modules and functions for executing shell commands are implemented in the Sub

Cainiao learns WCF notes-concept, cainiao wcf notesBackground The term "WCF" has never been unfamiliar. It has been used many times in actual projects, but it has never been time to learn a system, take a look at Jiang Jinnan's "Comprehensive Analysis of WCF" and take some notes. If you have any mistakes, please let us know. This chapter aims to give a rough understanding of the Vocabulary Involved in Windows communication programming. Reference: http

-growing. varType =typeof(T); varKeys =Newliststring>(); varValues =Newliststring>(); varPar =NewList(); foreach(varIteminchtype. GetProperties ()) {varValue =item. GetValue (t); if(item. Name.tolower () = ="ID")Continue; Keys. ADD (item. Name); Values. ADD ("@"+item. Name); Par. ADD (NewSqlParameter ("@"+item. Name, value)); } varc =string. Join (",", Keys. ToArray ()); varv =string. Join (",", values.

Step--Execute/etc/rc.d/rc.localIf you open this file, there is a word, read it, you will be the role of this command at a glance:# This script would beexecuted *after* all the other init scripts.# can put your own initialization stuff in here if you don ' t# want to does the full Sys V style init stuff.Rc.local is the place where Linux is left to the user to personalize after all initialization work. You can put the things you want to set up and start up here.Tenth Step-Execute/bin/login progra

object method and class method, easy to useObject Method init start Class method method name begins with the class name (lowercase first letter) Use self as much as possible in the construction method to improve extensibility 2) If Class A is imported in class b , and class B is also imported in Class AThis can cause circular referencesWorkaround: Import the class (. h file, which is the declaration file ) with @class without #import reference But @class just tell the compile

troublesome.But Google has provided us with a dedicated access to internal storage api:getfilesdir () Create a file where the user saves the user name and password //file file = new file ("Data/data/com.demo.storage/info.txt"); Getfilesdir returns a file object whose path is: data/data/com.demo.storage/files File File = new file (Getfilesdir (), "Info.txt") ;The path to the Getfiledir is under the files file under the package name: When we click Login, a info.txt file is created

stateless and multi-state iterators is not big, the parameters of a stateless iterator are only state constants and control variables, like the maximum length and index in an array, and a multi-state iterator needs to pass many parameters in the iteration function, so you can use the array as the state constant input, As the Tabsearch iteration function above7. Table operation (first LUA has garbage auto-recycle mechanism)Table.concat (Table,[,sep [, start [, end]]): Where Sep defines the delim

Cat Share, must boutiqueOriginal articles, welcome reprint. Reprint Please specify: Sanayu's BlogAddress: http://blog.csdn.net/u013357243QR Code is a project may be used, iOS open camera request QR Code speed is not Android can compare ... (Android scan QR code to swing back and forth ...) ）Simple to say, how to put a piece of information (URL, string) into a QR code, directly on the codeSteps:Import Coreimage Framework #import Generate two-dimensional code with filter Cifilter#import "ViewContr

().study(@"xx剪发"); } return0;}Person object://Person.h@interface Person : NSObject- (Person *(^)(NSString *name))study;- (Person *(^)())run;@end//Person.m@implementation Person- (Person *(^)(NSString *))study{ return ^(NSString *name){ NSLog(@"study----%@", name); returnself; };}- (Person *(^)())run{ return ^{ NSLog(@"run----"); returnself; };}@endIn this area, weP.study (@ "xx treasure book"). Run (). Study (@ "XX hair cut");Call study method: P.stu