pmp study notes

JAVA Study Notes (fifty-nine)-Socket programming, Study Notes socketClient Import java. io. IOException; import java.net. datagramPacket; import java.net. datagramSocket; import java.net. inetAddress; import java.net. unknownHostException;/** Client */public class Client {public static void main (String [] args) throws

HTML Study Notes (2): html Study Notes 1. The Form tag indicates the Form, which is used to submit data to the web server. The Action attribute is used to specify a URL to determine where the form data is submitted to the network for processing. The method attribute can only take two values, get or post, the get metho

DOM Study Notes 3. dom Study Notes Get nodes through node hierarchy: (important)When a node has no id or name, the link in the node is another way to get the node.Get nodes through node relationshipLink:1. parent node: parentNode, a parent node2. subnode: childNodes, which is a set of directly descendant nodes3. sibli

Study Notes for Linux _ Day2 and Study Notes _ day2 The next day, continue to learn Linux commands... I. Command for viewing the file and directory list Ls: displays files and directories in the current directory, but does not show hidden files and directories. Ls-a: displays all files and directories in the curren

BootStrap3 Study Notes (1) -- mesh system, bootstrap3 Study Notes Code and table from: http://www.tutorialrepublic.com/twitter-bootstrap-tutorial/bootstrap-grid-system.php If a grid is displayed, the Code should look like this: Col-* indicates the column width occupied by the grid system for different types of device

Swift Study Notes (2): handle errors and swift Study Notes Directory: Do-catch Assertions Do-catch In Swift, throws can be used to throw exceptions during program execution, and do... catch can be used externally to catch exceptions thrown by methods limited by try. Func makeASandwich () throws {// This fun

MySQL Study Notes _ 10_MySQL Advanced Operations (below) and study notes _ 10_mysql MySQL Advanced Operations (below) V. MySQL pre-processing statements 1. Set the pre-processing stmt and pass a data as the where judgment condition. Prepare stmt from "select * from table_name where id> ?"; 2. Set a variable Set @ I

MySQL Study Notes _ 9_MySQL Advanced Operations (on) and study notes _ 9_mysql MySQL Advanced Operations (I) I. MySQL table replication Create table t2 like t1; # copy the table structure. t2 can learn all the table structures of t1. Insert into t2 select * from t1; # copy table data, but this still has a defect, bec

MySQL Study Notes _ 7_MySQL common built-in functions and Study Notes _ 7_mysql MySQL common built-in functions Note: 1) it can be used in SELECT/UPDATE/DELETE and where, orderby, and having. 2) use the field name as a parameter in the function. The value of the variable is the value of each row corresponding to the

Python Study Notes (6) and python Study Notes I. Classes and Instances The first object-oriented program: class Student(object): def __init__(self, name, score): self.name = name self.score = score def print_score(self): print '%s: %s' % (self.name, self.score)bart = Student('Bart Simpson',

Mysql Study Notes-mysql database installation and mysql Study Notes 1. Run the mysql installation package and select Custom installation (the installation path should not contain Chinese characters; otherwise, an error will occur during installation !) 2. For a mysql instance to be successfully operated, three part

C ++ Study Notes (10): iterator and Study Notes Generator We all know that we can use subscript operations to access string objects and vector objects. There is also a more general method that can be implemented. The name is iterator ). Similar to pointers, The iterator also provides indirect access to objects. As far

Python Study Notes (7) and python Study Notes 1. dynamically add attributes and methods to a class: 1. dynamically add attributes and methods to an instance: The method bound to an instance does not work for another instance. Class Student (object): passs = Student () s. name = 'Michael '# dynamically bind an attribute

Introduction to HTML Study Notes (1) and introduction to html Study Notes 　　HTML(HyperText Markup LanguageHypertext Markup Language). 'hypertext 'indicates that a page can contain not only text information, but also images, links, and other non-text elements. Html, js, and jq are used togetherWebsite front-end developm

HTML Study Notes (2) color system and Study Notes System There are three types of Color Representation for html pages:English Representation,Hexadecimal RepresentationAndDecimal. The color passes through the three primary colorsRed, green, and blueThe three types are mixed in proportion. For example, the red decimal f

(Linux Study Notes 1: Compressed) [20180209], Study Notes 20180209Study Note 1: compress the file extension by compressing the command at a.m. on April 9, February 5, 2015 *. tar, * .tar.gz ,*. tgz ,*. gz ,*. Z ,*. bz2 common compression commands gzip and bzip2, bzip2 compression ratio gzip is better tar can be used fo

C ++ study notes 5 Containers and Study Notes containers 1. Use assign The assign operation first deletes all elements in the container, and then inserts the new elements specified by its parameters into the container. Like the constructor for copying container elements, if the two containers have the same type, their

Mysql Study Notes (log management), mysql Study Notes Logs: mysql logs that record the running status, daily operations, and error information of the database: Binary logs, error logs, and query logs. Binary log: records database operations in binary format, but does not record query statement error logs. This log rec

Swift 2.0 Study Notes (Day 12) -- talk about several special operators, swift Study Notes For Original Articles, please reprint them. Reprinted Please note: Guan Dongsheng's blog In addition to some common operators, there are also some other: • Reference Number (.): operator such as instance call attributes a

Grunt Study Notes (for beginners) and grunt Study Notes 1. Before learning grunt, you must first have a simple understanding of nodejs. The steps for installing nodejs are simple. Install nodejs as prompted on the official website. Http://www.nodejs.org/ 2. Grunt Introduction Grunt is an automated project building to