through finger detection.
If we still find f finger, we can use PCA to analyze the finger's principal component, that is, the finger's direction. This is two constraints (it should be a vector) when you find a finger amount, the actual spatial position of the fingertip is fixed. Here there are three constraints (known ). When we remove the point clouds of our fingers, we have only the palm left. At this time, we can use PCA to analyze the direction of the palm. Here are three constraints (not
* 1 install apache2 (httpd-2.2.4 )*******
: Http://www.apache.org/dist/httpd/httpd-2.2.4.tar.gz
# Tar zxvf httpd-2.2.4.tar.gz# Cd httpd-2.2.4#./Configure -- prefix =/usr/local/apache2 -- enable-so -- enable-Rewrite# Make# Make install
# Vi/usr/local/apache2/CONF/httpd. confModifyUser nobodyGroup nobody
Find the line # addtype application/X-tar. tgz and add two lines below.Addtype application/X-httpd-PHP. phpAddtype application/X-httpd-PHP-source. PHPsFind the following line and add index. php. T
then adding our own logic to each menu item, here we are ingenious to pop a toast that we just learned.* Run the program: Hey.. Where is the menu key??? To better demonstrate the effect, let's change the firstactivity inherited from activity to inherit from Appcompatactivity. Now the title bar appears, let us click on the top right corner of the small icon, the menu is displayed, the effect is as follows.Destroy an activityHow do I destroy an activity?In fact, the answer is very simple, just cl
we want to use is a very simple geometry, and the vector image occupies a very small amount of storage space.There is also a practical icon making tool website for Android Asset Studio. You can choose to make the app icon or the System icon, and after adjusting the parameters, you can download the icon to use locally.This article is part of a series of documents from design to implementation-hands-on Android app development. Thank you for your reading and feedback, any comments and suggestions
1. Enter the bin directory of Tomcat, for example, my/usr/local/apache-tomcat-8.5.16/bin2. Create a new file setenv.shVI setenv.shand add the following in this file, set the initial heap size-xms, maximum heap size-xmx, minimum heap size-xmnExport catalina_opts= "$CATALINA _opts-xms512m"export catalina_opts= "$CATALINA _opts-xmx1024m"3. Use the following command to open Tomcat./catalina.sh RunYou can see the following in the startup log:This indicates that your settings are in effect!Linux Learn
Learning Goals:To view the running status of the Docker daemonStart, stop, restart the Docker daemonStartup options for the Docker daemonModify and view the startup options for the Docker daemon1. # View Docker running statusMethod One: Ps-ef | grep javaMethod Two: sudo status dockerBack to: Docker start/running, Process 18479Returns the process number that is currently started and is running while returning2.# Start, stop, restart the Docker daemonsudo service docker startsudo service docker st
When you upgrade the. NET Framework from version 4.5.0 to 4.5.2 with VS2015, the following error follows:
Description: An error occurred during the compilation of resources required to provide services to the request. Please check the following specific error details and modify the source code appropriately.Compiler error message: CS1617: Option "6" is not valid for/langversion; must be ISO-1, ISO-2, 3, 4, 5
Database integrity: Reliable + accurate = integrityDatabase integrity: Entities: Ensure that each row has a data field: A column of data references: Guaranteed numbering customization: ensure your own rulesPrimary key: Ensures that each row of Entity data can be differentiated without identical dataConstraint: Name format primary key set Primary keyUNIQUE constraint: Column values can only be unique nullable can be multiple unique names format unique NOT NULLNon-empty constraint: NOT null (canno
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