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First components to be prepared:1. Raspberry Pi 3 Model B2, SD card one sheet3. Network cable and router4. ComputerRaspberry Pi PackagingRaspberry Pi FrontComponentsOne, SD card system writeFirst of all, download the Raspberry Pi system from the official website!Address: https://www.raspberrypi.org/downloads/Select Raspbian Downloadalso download Win32diskimagerWrite Raspbian system to SD cardSecond, install

affect the main meaning-thanks to Qiuqiu/Sun reminder. Ext. regmodel ('post', { You can also define attributes associations: Ext. regmodel ('user', { During model registration, the main program is as follows (for details, see the Notes ): /** Iii. Ext. Data. belongstoassociation Ext. Data. Association indicates a one-to-one relational model. The owner model shou

Dynamics CRM 2015 New Feature (3): Hierarchical Security Model, hierarchical Hierarchical Security Mode is a disruptive feature. Its appearance completely subverts the traditional Dynamics CRM Security management concept. It provides users with a tree-based structure (organization management chart) to control users' access to records. With this permission contro

() {userid = 2 , Username = " Spiderman " , Useremail = " Spiderman@cnblogs.com " }); 6 List. Add ( New Users () {userid = 3 , Username = " Superman " , Useremail = " PaSupermanrry@cnblogs.com " }); 7 List. Add ( New Users () {userid = 4 , Username = " Batman " , Useremail = " Batman@cnblogs.com " }); 8 Return List. asqu

Document directory Adding a new field to the movie model and table Adding a new field to the movie model and table In this section you'll see how easy it is to evolve the schema of our database by simply adding another field toMovieClass. OpenMovieClass and addRatingProperty (column) that hasStringLengthAttribute ap