bsf notes

PHP Reading Notes _ detailed explanation of structure statements and Reading Notes PHP structured statement Sequence Structure The ordered structure is like a straight line, which is executed in sequence. By default, the code we write is executed in a sequential structure. Conditional structure: if... Else... The condition structure is like a fork in the road. You can go left or right. For example, when we

C ++ Primer 5th learning notes (3), primer learning notesC ++ Primer 5th learning notes (3)Chapter 4/5 highlights and difficultiesYou can click here to review chapter 3Because Chapter 5 has a small amount of content, it is merged with the notes in Chapter 4.Chapter 4 refers to the knowledge related to expressions. Expressions are the infrastructure of C ++. This

Java learning notes-basic methods of the File class, java learning notes-file Gradually develop the habit of writing blogs -----" Some time ago, I/O stream in the java of Mars was not fully understood, and it was difficult to find the I/O Stream. Today, I read other teaching courses, books, and notes to record my daily study and life. File class methods: 1 packag

Javascript learning notes _ basic syntax, type, variable, and javascript learning notes Basic syntax, type, and variable Non-numeric values: (since Infinity and NaN are not equal to any value, including themselves) 1. Use x! = X. true is returned only when x is NaN; 2. isNaN (x) is used. If x is NaN or a non-numeric value, true is returned; 3. If isFinity (x) is used, true is returned if x is not NaN, Infin

Bootstrap tab learning notes sharing, bootstrap learning notes The examples in this article share the learning notes on the Bootstrap tab for your reference. The details are as follows: Tab Capsule Tab The above is all the content of this article. I hope it will be helpful for your learning and support for helping customers.

Linux Study Notes (6)-Work Management, linux Study Notes What is job management? The job is translated from the job command. The job command can view the processes that work in the background. For example, what is job management? It takes a lot of time to package a large directory, but you also need to use other commands. You will think that I can log on to several terminals. In/etc/security/limits. conf,

[Learning notes] [OC language] self keyword, learning notes ocself 1. member variables and local variables have the same nameWhen the member variables and local variables have the same name, the proximity principle is adopted to access local variables.Use self to access member variables and distinguish local variables with the same name 2. Usage DetailsWhere: All OC methods (Object Methods \ class methods)

Python beginner's notes (1) and python beginner's notes On the first day of learning python, I hope I can truly understand the computer language and make some achievements. Write down study notes, record learning progress, entertain and learn, and keep growing. Python details: What is python? Where can I use it? What are using it? Python is a programming langu

Basic Javascript learning notes (for cainiao) and javascript learning notes What is a variable? A variable is a container used to store information. Variable Declaration Syntax: Var variable name Variable name = value; The variable must be declared before being assigned a value. Variable values can be assigned repeatedly. Variable naming rules The variable must start with a letter; Variables can also start

JavaScript learning notes: JS event objects and javascript learning notes Event object: when an event occurs, the browser automatically creates the object, including the event type and mouse coordinates. Attribute of the event object: Format: event. attribute. Notes: Event indicates the event status, such as the element that triggers the event object, the locatio

[Learning notes] [C Language] typedef, learning notes typedef 1. Concept We can use the typedef keyword to define a new name (alias) for various data types ). 2. Role: Create a new name for an existing type 3. Application scenarios:1> Basic Data Type2> pointer3> struct4> Enumeration5> pointer to function 4. Code 1 # include Usage notes 1 # include

Less Study Notes 27/8/17, less study notes Less official website Http://less.bootcss.com/ Less is a dynamic style language. "Style. less" is directly changed to "style. less. For example: Less can now be run on clients (such as IE +, Webkit, Firefox) and servers (such as node. js. As mentioned above, Less is an extension of CSS. It is not only backward compatible, but also adds many additional functions b

My Android notes-my knowledge about android and my Android notes-androidAfter coding for such a long time, I recorded some of my concepts about Android. Most of the content below is sourced from network information and official documents. 1. The core of the Android operating system is a branch of Linux. It has typical Linux scheduling and functions. Google modifies and expands Linux to run better on mobile

Python web framework learning notes and pythonweb learning notes I. Nature of web Framework 1. handle requests by yourself based on socket #! /Usr/bin/env python3 # coding: utf8import socketdef handle_request (client): # receive request buf = client. recv (1024) print (buf) # return information client. send (bytes (' 2. wsgi-based WSGI, short for Web Server Gateway Interface or Python Web Server Gateway Int

QT learning notes _ establish connections and qt learning notes A connection is called a connection, that is, the user's response to the program after clicking a button. This time, an exit button is written. // Establish a connection to respond to the event # include : Establish a connection between C ++ GUI and Qt, and connect signals and slots Void QSpinBox: valueChanged (int I) [signal]This signal is

Android notes-data storage in Android (3), android notes The Android system integrates a lightweight database:SQLiteTherefore, Android supports databases very well and every application can use it conveniently. As an embedded database engine, SQLite is applicable to the access to a proper amount of data on devices with limited resources. Currently, mainstream mobile devices such as Android and iPhone use SQ

Linux Study Notes 1, linux Study Notes Since my big Microsoft finally put it down, I decided to give the open-source community a late hug. The fans who have followed me for many years suddenly got the favor of the goddess. They were all lost, crying, and excited, singing in succession: "After waiting for a long time, I finally waited until today, and after a long dream, I finally realized my dream ......" A

Bootstrap tutorial JS plug-in rolling listening learning notes sharing, bootstrap learning notes This article mainly describes the JavaScript plug-in-rolling listener. 1. Case studies The scroll listening plug-in can automatically update the corresponding navigation tag based on the position of the scroll bar. You can scroll through this page to see the changes in the left navigation bar. First, you can tes

[Study Notes] [C Language] function, Study Notes C Language1. What is a function? Any C language program is composed of one or more program segments (applets), each of which has its own functions. We generally call these segments "functions ". Therefore, you can say that the C language program is composed of functions. For example, if you write an MP3 player program in C language, the program structure is s

Compilation of beginner Study Notes (13)-External interruptions, compilation of Study Notes Getting started with crazy summer vacation Study Notes (13th)-out-of-band interruption Reference: Chapter 15th of Assembly Language 1. External interruption Information External interruptions can be divided into shielded interruptions and unshielded interruptions. Blocke