itil foundation 3 0

Xdoc. Descendants () where s.name.localname = = "Name" s.value ==nametxt Select S.parent; foreach(XElement IteminchQuery//adding eligible nodes to the Eles collection{eles. ADD (item); } foreach(XElement IteminchEles//traverse the data to be traced, output{Console.WriteLine ("Id:{0},name:{1},sex:{2},age:{3}", item. Attribute ("ID"). Value,item. Eleme

make your code easy to read and maintain.StatementStatements are roughly equivalent to sentences in natural languages. Statements form the complete unit of execution. The following types of expressions can form statements by ending with a colon.An assignment expression+ + 、--ExpressionsMethod invocationObject-Creation expressionsThese statements are called expression statements. Like what:Avalue = 8933.234;avalue++;System.out.println ("Hello");Bicycle bike = new Bicycle ();In addition to expres

= functionService; } public String SayHello(String word){ return functionService.sayHello(word); }}3) Configuration ClassPackage Com.wisely.highlight_spring4.ch1.javaconfig;import Org.springframework.context.annotation.bean;import org.springframework.context.annotation.Configuration; @Configuration//declares that this is a configuration class, which means that there are 0 or more @bean

tuples.To define a tuple:A = (' 1 ', ' 2 ', ' 3 ', [' s ', ' B '])To change the elements of a list in a tuple:A[3][0] = ABCValue:Print (A[0])Cycle:t = (' A ', 1, ' B ', 1, (3,4))n = 0While n Print (T[n])n + = 1For I in range (len (t)):Print (T[i])Common operations for tuples:Count:t = (' A ', 1, ' B ', 1, (3,4))Print

CSS 3 allows you to set multiple background images, each background image occupies a layer, the layer up and down according to the order in the CSS, the first written background in the top, each layer of the picture definition using commas separated.For example, the following code:Background:url (http://dotnet.aspx.cc/Book/Images/CSS1_s.jpg) 0 0 no-repeat, url (

CSS 3 allows you to set multiple background images, each background image occupies a layer, the layer up and down according to the order in the CSS, the first written background in the top, each layer of the picture definition using commas separated.For example, the following code:Background:url (http://dotnet.aspx.cc/Book/Images/CSS1_s.jpg) 0 0 no-repeat, url (

, which is master, not master.2.node1 uses the _id of the document to determine that all copies of the document belonging to Shard 0.shard 0 exist on all 3 nodes. This time, it routes the request to NODE2.3.node2 returns the document to Node1,node1 to return the document to the client. For a read request, the request node (NODE1) selects a different replica each

accurately described beforehand.Document Structure of 3.SchemaThe suffix name of the XML Schema file is typically. xsdThe XML Schema file is a special XML file? All schema documents use schema as their root element? The elements and data types used to construct the schema come from the namespace Http://www.w3.org/2001/XMLSchema, with the prefix generally using XS or XSDExample (Save As Student.xsd):1 XML version= "1.0" encoding= "UTF-8"?>2 Xs:schemaX

Assignment capitalizationThe ID is shared when the amount of data is smallerUser-to-Program interaction: input () receives user input and turns input into a stringComment: Explain code to enhance code readability.Single-line Comment: # Multiline comment "" "* * *" ""File Header: #! /usr/bin/env python (only for Liunx)#-*-Coding:utf-8Numeric type: int, floating-point number (decimal), float,String (description) str ("'") supports string concatenation (+ *)List: defined in the [] number, separate

) because it is difficult to debug, and it is not known that the function created or modified the global variable.Special cases for local variables and global variablesnames=[' Gavin ', ' Simons ', ' Jack ', ' Rain ']Def chang_name ():Names[0] = ' James Simons 'Print (' Inside Func ', names)Change_name ()Print (names)Output: Inside func [' James Simons ', ' Simons ', ' Jack ', ' Rain '][' James Simons ', ' Simons ', ' Jack ', ' Rain ']So only simple d

1. Cyclic structure　　3 Loop statements: While, Do-while, forIn the face of the cycle we should note:1. What does the loop do? (The thing that repeats--that is, the content of the loop body)2. What is the termination condition of the cycle? (cyclic condition)Features of 3 cycles:Characteristics of the While loop: first judgment, in the executionCharacteristics of Do-while cycle: first execution, after judgme

This is the 3rd part of the 3D Foundation, mainly about the vertex tangent vector calculation principle, I believe that many people are shader in the tangent components do not have in-depth understanding, I hope this article can help you understand the cutting space. We use the bump mapping as an example to explain today's principles. In fact, the found perturbation value stored in the bump map is actually based on X y in the figure (for the bump map

int Long ()//Returns the length of the string1 String str = new String ("Asdfzxc"), 2 int strlength = Str.length ();//strlength = 72. To find a character string in a positionPublic char charAt (int index)//Returns the character at the specified position in the string; Note that the first character index in the string is 0, and the last is length ()-1.1 String str = new String ("Asdfzxc"); 2 char ch = str.charat (4);//ch = Z3. Extract the Sub-stringYo

voidBtnthread_click (Objectsender, EventArgs e) { //1, creating threads and passing the method through the delegate syntax sugarThread Thrson =NewThread (COUNTDO); //2, set as Background threadThrson.isbackground =true; //3, start threadThrson.start (); } voidCountdo () {inti =0; while(true) { if(I 999999999) {i++; } Else {

; } } } }Light Bubble float: Public Static voidBubblesort (int[] ary) { for(inti =0; I 1; i++) { for(intj = ary.length-1; J >0; j--) { if(Ary[j] 1]) { intt =Ary[j]; ARY[J]= Ary[j-1]; Ary[j-1] =T; } } } }(3) Insert sort: Each step inserts a record to be sorted by its se

during traversal Variable Group Object Nsmutablearray is used to describe variable array objects, which are subclasses of NsarrayAdd to:-(void) AddObject: (ObjectType) anobject-(void) Addobjectsfromarray: (nsarrayDelete:-(void) removeallobjects-(void) removelastobject-(void) Removeobjectatindex: (nsuinteger) index Collection Object Nsset is used to describe the collection object, and the subclass is NsmutablesetThe difference between a collection and an array: 1) The

easy to maintain.JavaScript functions can encapsulate a program that may be used multiple times in a program, and can be invoked as an event-driven result, to implement a function that is associated with event-driven, which is different from other languages.In JavaScript, functions are defined by the keyword function, which can have multiple parameters. The basic format is:function function name (parameter 1, parameter 2) { function body; return return value;}When calling (using) a function,

ignores one step, is to bind topology to the media session, is to call a function: Settopology, the description of the function can refer to MSDN. Parsing this part of the topology is actually activating the components inside the topology, and inserting the necessary components to convert the media type, hey, don't know if there is a clear, two-step:To activate the component described by node in topology, B has created sink node but has not instantiated the corresponding audio Render/video rend

1, about the "%2i" in the NSLog function:(1), if the NSLog function outputs two rows of data, 9 and 10, respectively. If you use the "%i" output, 9 is aligned with 1, and 9 is aligned with 0 if you use the "%2i" output. "%2i" means that the output will default to a width of two characters and right-aligned;(2), if you want to align Left, you need to write "%-2i", pay attention to the minus sign.2. Relational operators: is and,| | is OR;

form a closure on an object's properties?function A () {var i=0;Function B () {alert (i++);}return b;}A ();//This time in-memory I space is processed by GCvar c=a ();//This usage, GC does not treat I as garbagec (); Output 0C () Output 1, which proves that the variable is closedSystemInner classObject,array/math/boolean/string/regexp/data/numberExampleMath, Static classAlert (Math.Abs (-29))Show current date, dynamic classvar not1=new Date ();Alert (