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