iOS UIView add edges of jagged and wavy lines

1. ios adds jagged edge to UIView It is mainly to calculate the position of the sawtooth point on the View, and then fill it in. The code is as follows: UIBezierPath *path = [UIBezierPath bezierPath]; path.lineWidth = borderWidth; NSInteger x = 0; NSInteger y = (borderPosition = ...

Posted by Gwayn on Sat, 04 Apr 2020 13:29:40 -0700

Oracle database inserts data in table B into table A in batches

Business description: table A is the detailed statement of table B. now it is required that table B has millions of records. Insert the relevant records of table B in table A. Preparation: oracle database, database tool pl\sql, stored procedures written in the package. Implementation ideas: 3.1 get the total data volu ...

Posted by name1090 on Sat, 04 Apr 2020 13:06:07 -0700

tcp programming -- client obtains server input and output stream

tcp programming -- client obtains server input and output stream Train of thought: Step 1: instantiate a ServerSocket object (server socket) to wait for requests on the network (that is, the socket waiting to connect) Step 2: call the accept() method to return a socket object connected to the client socket object Step 3: the output stream obtai ...

Posted by bgoulette612 on Sat, 04 Apr 2020 12:56:32 -0700

Bootstrap multi level drop-down menu

Multi level drop-down menu In many cases, we may need multi-level pull-down menus. In one pull-down menu item, create another pull-down menu to realize multi-level pull-down menu. Just add a. Dropdown submenu class to any < li > element of the pull-down menu, and add a list of. Dropdown submenu classes under the < li & ...

Posted by yakabod on Sat, 04 Apr 2020 12:48:05 -0700

Encapsulation of Android logstore Logger and the problem of AS3.0 log not being aligned

It doesn't matter how to introduce loggers. There are a lot of them on the Internet. This article records the encapsulation of loggers in use and the use of loggers in Android Studio 3.0 and above. Encapsulation of Logger When using any third-party library, if you can encapsulate it once to replace it later, o ...

Posted by yuan22m on Sat, 04 Apr 2020 12:10:11 -0700

React subcomponents communicate with parent components

The communication between the React subcomponent and the parent component includes the following aspects: 1. The child component gets the parent component property: props or state 2. Method of child component calling parent component 3. The parent component gets the properties of the child component: props or state ...

Posted by mrmufin on Sat, 04 Apr 2020 12:02:30 -0700

The implementation of multi criteria filtering in jquery

html code: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>jquery Multi criteria filtering</title> </head> <body> <div id="wrap"> <ul class="select"> <li class="select-list"> <dl id="select1"> <dt>Jacket:</dt> <dd ...

Posted by andyg2 on Sat, 04 Apr 2020 11:46:39 -0700

Default parameter: circle area

Description Write a function with default value to find the circle area. Its prototype is: double area(double r=1.0); When the parameter r is specified when the function is called, the area of the circle with radius R is calculated; otherwise, the area of the circle with radius 1 is calculated. Where, PI value is 3. ...

Posted by Megienos on Sat, 04 Apr 2020 11:38:23 -0700

Event capture and detailed explanation of event bubble

Binding of events The difference between addEventListener and event binding on addEventListener can bind multiple identical events to an element and ensure that all events will be executed Multiple events bound with on are overwritten by the last event Remove event binding: removeEventListener Event captu ...

Posted by JAM on Sat, 04 Apr 2020 11:23:47 -0700

java Web session Technology (cookie)

java Web(cookie) session Technology Set xml configuration information <!-- ************************** --> Create a select -- > < servlet name > demo05 < / servlet name > <! -- 2. Name select -- > < servlet class > come. Lanou3g. Demo05 < / servlet class > &l ...

Posted by seodevhead on Sat, 04 Apr 2020 11:11:53 -0700