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1. Concepts
Singleton mode: it is designed to ensure that a class has only one instance and provides a global access point for it. This instance is shared by all program modules.
[Cpp]Class CSingleton{// Public static method to obtain the instancePublic:Static CSingleton * GetInstance (){If (m_pInstance = NULL) // determines whether the first call is successful.M_pInstance = new CSingleton ();Return m_pInstance;}// Private constructor to prevent instantiationPrivate:CSingleton (){};// Private St
very good extensibility.Example and source codeWe take a simple toy factory, for example, the factory produces children's toys, girls ' toys and boys ' toys, first write a Itoy abstract product interface used to define the basic behavior of the toy model, and then implement the interface to generate a few toys specific product class Childrentoy,mentoy and Womentoy class:Itoy.classpublicinterface IToy { /** * 名字 */ String getName(); /** * 价格 */ float price(); /**
If you see the Webcenter Space app (Webcenter.ear) from the WebLogic console, the session timeout (3,600 seconds) session timout is misleading and is not applicable in the case of webcenter space applications. If you update the value from the console, it does not affect the session time-out of the Webcenter space application. Then, the question is how can I change the Webcenter space app session timeout? The default session timeout in Web. XML is set to 45 minutes. There are two ways to change t
Sony PS VR device okay
Virtual Reality device PS VR for the price of 399 U.S. dollars, and officially sold in October this year, PS VR needs to be matched with PS4. PS VR uses a 5.7-inch OLED screen with a resolution of 1080P (Monocular 960x1080), the refresh rate supports 90Hz and 120Hz, the field angle is about 100 degrees, and the delay is less than 18 milliseconds.
Sony PS VR equipment how much money
Sony posted a PS VR price of 39
language (1-4):"
Select I in Perl php python shell exit
Todo
Case $i in
Perl) echo "I like Perl";;
php) echo "PHP is good";;
Python) echo "Xiangjun like Python";;
Shell) echo "Shell is my favourite";;
exit) exit;;
Esac
Done
[Root@vps tmp] $bash select.sh1) Perl2) PHP3) Python4) Shell5) ExitSelect a script language (1-4): 3Xiangjun like PythonSelect a script language (1-4):
It's changed, haha.
PS4: We debug the shell scr
*} ${[emailprotected]} variable name matching, matching variable names starting with prefix, output matching variable names: [emailprotected]:~# Echo ${! p*} PAT PATH pipestatus PPID PS1 PS2 PS4 PW PWD [emailprotected]:~# Echo ${[emailnbsp ;p rotected]} PAT PATH pipestatus PPID PS1 PS2 PS4 PW PWD [emailprotected]:~# ${!name[@]} ${!name[*]} The list of array keys. If the name is an array variable, it expands
, which outputs the product of the texture and color:The{Blend Srcalpha OneminussrcalphaSetTexture [_maintex] {Constantcolor[_color] combine texture * contant}}Do exactly the same thing as Vertex + pixel and produce the same resultPass{Blend Srcalpha OneminussrcalphaCgprogram#pragma vertex vert#pragma fragment Frag#include "Unitycg.cginc"struct V2F{FLOAT2 uv:texcoord0;FLOAT4 pos:sv_position;};FLOAT4 _maintex_st;v2f Vert (float4 pos:position, Float2 uv:texcoord0){v2f o;O.pos = Mul (UNITY_MATRIX_M
Auto-Registration // Auto Load file // features, that is, when used, the automatic loading, is better than the current full load, this is his propaganda on-demand loading! If there is no corresponding need pre-loaded things, the default is detect the file is correct, Direct use returninclude for // through class name, according to different standard do load, more internationalization, you progress // in fact, the core technology in this should be the path of Ps0 and
Document directory
Task: display current bash prompt (PS1)
Task: modify current bash prompt
Task: add colors to the prompt
Task: how to make the prompt setting permanent
Tput command
Handy tput commands
Colors {code} code for tput command
Q. How do I change the color of my shell prompt under Linux?
A. YouCan change the color of your shell prompt to impress your friend orMake your own life quite easy while working at command prompt.
In the Linux default shell is Bash.
Your current prom
h.265 versions with the same content, and the size can be larger than GB, the existing player does not support-GB of high-capacity, Erasable CDS (bdxl ).
Up to now, there is still no proper solution. You can add a 4 K resolution video to an existing Blu-ray standard without compromising its compatibility. Although it is not necessary to improve the CD manufacturing process to update the h.265 standard, it is necessary to create a new player to play the new Blu-ray disc. Although some players ca
1. Install mingw
Install it to: C:/mingw. You 'd better download the automatic installation version to mingw.
2. Install msys to the mingw home page to download the latest version of msys: URL: http://www.mingw.org/download.shtmlIn the download list, current-msys is the msys Installer. Download its binary version (BIN) and install it under C:/msys/1.0. Specify the mingw position in the middle.
3. Modify the msys configuration fileModify/etc/profile (the Windows path is C:/msys/1.0/etc/profile)
executing the command-U when the execution parameter is included, the unset variable is used as the error handling (if the extension attempt appears in the unset variable, the shell displays the error message. if it is not interactive, exit with a non-ling value)-V: The shell input line is displayed when the input line is read.-X: after each simple command is extended, the PS4 extension value is displayed, followed by the command to be executed.-L sa
showcase u
Core lib smit. log unix
7. Long Commands
When you write a long command in the AIX shell, you can use "\" as the line break tag. In this case, shell uses a ">" as the prompt.
8. variables in the Shell Environment
Variables can be defined in the shell environment for systems, users, shell programs and various applications. Variables can be defined by the system or by the user. You can also modify or delete the variables that have been defined by the system.
Example: HOME -- user's ho
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