libreoffice basic programming

Copy codeThe Code is as follows: /* What you learn and do is published to facilitate your own reading and publishing. You are welcome to give your expert guidance ...... Tip: The test is successful in this example. Scenario Design] Simulate the computer motherboard IDE interface, such as: the memory that can be accessed by the motherboard often has optical drive, hard drive, flash memory, etc, For convenience, it is necessary to set the same interface for these different storages. In this exampl

Shell basic syntax Like an advanced programming language, Shell also provides instructions and the ability to use variables. For Shell, the values of all variables are a string. The Shell program uses $ var to reference the value of a variable named var. Shell has the following basic types of variables. 1) environment variables defined by Shell: At the beginning

Objective-C basic notes (4) Category, objectivec Programming OC provides a distinctive way-Category, which can dynamically add new behaviors (methods) for existing classes. This ensures that the original design scale of the classes is small, when the function is added, it is gradually expanded. When you use Category to expand a class, you do not need to create a subclass. Category uses a simple method to mo

. fillrectangle (brush, 180, 70,200,150 );// Create a bitmap with transparency between the two bitmapsBitmap bm1 = new Bitmap (200,100 );Graphics Bg1 = graphics. fromimage (bm1 );Solidbrush redbrush =New solidbrush (color. fromargb (210,255, 0, 0 ));Solidbrush greenbrush =New solidbrush (color. fromargb (210, 0,255, 0 ));Bg1.fillrectangle (redbrush, 0, 0,150, 70 );Bg1.fillrectangle (greenbrush, 30, 30,150, 70 );G. drawimage (bm1, 100,100 );// Create a bitmap with no transparency between the two

nonprinting characters, or characters that have other uses.These character literals can appear anywhere in the string, and will also be parsed as a character.String Features:Once the strings are created, their values cannot be changed. To change the string saved by a variable, first destroy the original string, and then populate the variable with another string containing the new value.Convert to String:ToString () Method: Returns the string representation of the corresponding value.Numeric, Bo

client{public static void Main (string[] args) throws Exception {Socket socket = new socket ("localhost", 9999);Sending information to the serverOutputStream OS = Socket.getoutputstream ();PrintStream PS = new PrintStream (OS);PS.PRINTLN ("Client-side services");Read the information sent by the serverInputStream is = Socket.getinputstream ();BufferedReader br = new BufferedReader (new InputStreamReader (IS));String str = br.readline ();System.out.println (str);Br.close ();Is.close ();Socket.clo

This article illustrates the basic usage of soft keyboards in Android programming. Share to everyone for your reference, specific as follows: Call the following code: (The first call shows, then the call is hidden, so repeated), this refers to the activity Inputmethodmanager IMM = (inputmethodmanager) this.getsystemservice (context.input_method_service); Imm.togglesoftinput (0, inputmethodmanager.h

: This article mainly introduces PHP Design Mode 1: Basic Programming mode. if you are interested in PHP tutorials, refer to it. Original article address: PHP design mode (1): Basic Programming mode Introduction As the saying goes, "PHP is the best language in the world", because PHP can do everything. However, in P

Javascript programming (Lesson 2) Today we are mainly studying the following: 1. java script Variables 2. java script expressions and operators You can use var and the name specified for the variable to declare the variable. The variable type can be determined by assigning values to the variable. Because java script uses a weak style, it does not have strict requirements on data types. During program execution, it will be automatically converted as n

12th. Graphical Interface Basics1. is that class the root of the Java GUI component? is the container Class A subclass of component? Which class is the root of the swing GUI build?Java.awt.component is the root of all Java GUI component classes.A container class, such as JFrame, is a subclass of a component.JComponent is the root of the Swing GUI component class.2.AWT components different from swing build?The components of AWT are heavy and swing components are lightweight.3.You can add a button

Controller control; Contact page and Controlleris implemented in the routing, so the page of each module and JS do not need their own contact.var studentmodule=angular.module ("Studentmodule", []);Studentmodule.controller ("Studentcontroller", Function ($scope, $http) {.... js code .....});# # Directory Relationship # #--public--css--font--js--angularjs_module--angular.min.js--angular-route.min.js--main.js (config js)--modules (Each module)--reg--reg.html (sub-page)--reg.js (JS)--login--login.h

12 basic knowledge commonly used in Python programming: regular expression substitution, traversal of directory methods, list sorting by column, de-weight, dictionary ordering, dictionary, list, string reciprocal, time object manipulation, command-line argument parsing (getopt), print format output, binary conversion, Python calls system commands or scripts, and Python reads and writes files. 1. Regular ex

Javascript programming (Lesson 1) whether you have learned java script before, This tutorial will take you to the java script Hall to understand the charm of java script. Everyone is here to be a fan of java scripts and have a certain understanding of java scripts. I will not introduce the history of java script. let's learn it directly and use it. Most people may think that java script runs on the client. Java script has two different runtime environ

The previous chapter of JavaScript advanced programming briefly talks about the use of objects. now we need to introduce them in detail. Object creation or destruction occurs during JavaScript execution. Understanding the meaning of this paradigm is crucial to understanding the entire language. 3.2.1 declarations and instantiation objects are created with the keyword new followed by the name of the class to be instantiated: the first line of code crea

while statement can be reached.If at least one of the following conditions is true, the end point of the while statement is reachable: While statement contains a reachable break statement (it is used to exit the while statement). The While statement is reachable and the Boolean expression does not have a constant value of true. Using System;namespace _while_statement{class Program {public static void Main (string[] args) {int i = 0, sum =0;while (i This article is f

type and number of parameters in the incoming function and reacting differently. No overloads1 function overload (var1) {2 alert ("This is the first function"); 3 }45function overload (Var1, Var2) {6 alert ("This is the second function "); 7 }89//This is thesecond functionSimulate overloading1 functionoverload () {2 if(Arguments.length = = 0) {3Alert ("First");4}Else if(Arguments.length = = 1) {5Alert ("Second");6}Else {7Alert ("Third");8 }9 }Ten OneOverload ();// First A

Network Programming 4-video learning notes for bixiangdong java basic tutorial, 4-bixiangdong Day24 06 custom browser-Tomcat server07 custom graphic interface browser-Tomcat server08 URL-URLConnection09 tips10 domain name resolution 06 custom browser-Tomcat server Client: custom Server: Tomcat1 import java.net. *; 2 import java. io. *; 3 class MyIE 4 {5 public static void main (String [] args) throws Excep

(9999)//client own port because UDP is not a connection-oriented Ds.send (DP);d s.close ();}}　　TESTUDP Clientimport Java.net.*;import java.io.*; public class Testudpclient{public static void Main (String args[]) throws exception{long n = 10000L; Bytearrayoutputstream BAOs = new Bytearrayoutputstream ();D ataoutputstream dos = new DataOutputStream (BAOs); Dos.writelong (n); byte[] buf = Baos.tobytearray ();//convert Long data into a character array, input System.out.println (buf.length); Datagra

[Linux] basic concepts of C language and Linux System Programming process 1. If files are the most important abstract concept of unix systems, processes are second only to files. A process is the target code in execution: active, surviving, and running programs. In addition to the target code process, it also contains data, resources, statuses, and virtualized computers. 2. Process System: Each proc

does not have a value between two numbers. B and A...B), which facilitates us to express values within a range.This section describes only the basic operators in Swift, the advanced operators include advanced operators, how to define the operators themselves, and how to perform operator overloads of their own type.TermsOperators have unary, two, and ternary operators.Unary operators operate on single-action objects, such as-a.Unary operators are pre-