how to use define

Using Anko and Kotlin to develop databases on Android: SQLite is never an easy task (KAD25). ankokotlin By Antonio Leiva Time: Mar 30,201 7 Link: https://antonioleiva.com/databases-anko-kotlin/     The fact tells us that writing a database in

An Effective Method for writing high-quality OC code and writing high-quality oc code1. Write this file only for your own memory, and there are related PDF files. If you need to leave a mailbox .. 2. Try to introduce as few header files as possible

[Swift] Day17: available type, swiftday17Optional (For an understanding of the optional types, refer to the walking of maoshen in the Swift world and sort out some key parts here .)Optinal Value The Optinal Value in Swift is like a box, which may

MySQL 5.7 new feature: Generated Column (function index) MySQL 5.7 introduces Generated Column. This article briefly introduces the usage and precautions of Generated Column, and provides a quick and complete tutorial for readers to understand MySQL

About the mouse style ------- Day81, style ------- day81 Today, I watched the old movie "Sunny Day". To tell the truth, I didn't understand it, but I didn't understand it. Although it was a classic film, it was my first time. Many people say that

Google CPP programming specifications-I can't remember how much I watch every day. I changed my skills in practice.CodeStyle! The name of the CPP file is. CC rather than. cpp. This is not very clear, why not use CPP, but CC

Linux error code list 17:22:22 Category:Linux   # Define eperm 1/* operation not permitted */ # Define enoent 2/* no such file or directory */ # Define esrch 3/* no such process */ # Define eintr 4/* interrupted system call */ #

After irrlicht supports Chinese characters, the conversion from char * To wchar_t * is often used during programming. I read the article about l "XX" that was previously reproduced. Article , Write a small function for use. # define xmalloc (s)

In the past, when I was in school, the teacher taught us not to forget to include header files when writing C language. Here, the extension is. H files, which have never understood this mechanism before, always think that this is not customizable

Variables defined in makefile are like Macros in C/C ++. They represent a text string, when executed in makefile, the original mode is automatically expanded in the used place. Unlike C/C ++, you can change the value in makefile. In makefile,

Gesture of iOS development -- Coexistence of uigesturerecognizer In the development of iPhone or iPad, in addition to using the touchesbegan/touchesmoved/touchesended method to control users' finger touch, you can also use the uigesturerecognizer

2.1Network Driver StructureThe architecture 1 of the Linux Network Driver is shown in.It can be divided into four layers:(1) Protocol Interface Layer (2) network device interface layer (3) Device Driver Function Layer (4) network device and media

"Process" has many definitions. In many teaching materials, it is defined as an example of program execution, some people think that it is a set of all the data structures described by the program processing. Here we will not go into its definition.

Reference: http://blog.csdn.net/alwaysrun/archive/2009/08/20/4467270.aspx Http://www.bianceng.cn/Programming/csharp/200910/11700.htm C and C ++ have a class of statements called Preprocessor commands. C # also has such a set of Preprocessor commands.

# Define usage 1.Simple define Definition # Define maxtime1000 A simple maxtime is defined. It represents 1000. If you write If (I The compiler replaces maxtime with 1000 before processing this code. This definition looks similar to a normal

Reprinted from: http://www.cnblogs.com/daizhj/articles/1956681.html to some configuration options made some instructions I have read the configuration item from top to bottom. I have a general understanding of it. For now, I still cannot use some

In the development of iPhone or iPad, apart from touchesbegan /Touchesmoved/touchesended this set of methods to control the user's finger touch, you can also use the operator class of uigesturerecognizer to determine. The advantage of using

These are all learning problems. If you make a mistake, leave a mark and pay attention to it later. 1. When defining a class, remember to add points after {} after the class ends. 2. Place "stdafx. H" at the top of other headers When referencing

  To determine the kernel print level and prink parameter print level, add the following code to the LED driver initialization code [and exit. Each time the insmod and rmmod LED modules are used, different print results are obtained based on the

I. Select In Winsock # include Prototype IntSelect ( IntNFDs,Fd_set *Readfds,Fd_set *Writefds,Fd_set *Exceptfds,Const struct timeval *Timeout); NFDs: this parameter is ignored and only works for compatibility.Readfds: (optional) pointer pointing to