Reactive Native Learning Notes 20 - Common API (2) AppState Application Front and Background, NetInfo Network Status

It is a very common function in the development of APP to determine whether the application status is in the foreground or in the background, and to obtain the basic application information such as wifi or traffic connection. Today we will introduce AppState and NetInfo modules respectively. AppState AppState can get whether the current AP ...

Posted on Thu, 27 Dec 2018 19:57:07 -0800 by Gutspiller

NFS introduces NFS server installation configuration NFS mount configuration option exportfs command NFS client problem

1. Introduction to NFS The full name of NFS service is NetWork File System: Network File System. It was first developed by sun Company. Version 4.0 was developed by Netapp Company. It is a service based on RPC Remote Procedure Call protocol. Application scenario: The files that need to be accessed on three machines A, B and C ...

Posted on Thu, 27 Dec 2018 17:51:06 -0800 by ven0mblade

Android develops the pre-loading and Fragment destruction of ViewPager, and the use of tabLayout+ViewPager

Recently, I think about the problem of using ViwPager+Fragment together, so I started Demo, and I feel good about using TabLayout+ViewPager casually. Here, I can record it for my own use in the future, and I can share it with you. First, the use of TabLayout+ViewPager Since TabLayout is the first step to import the Design package, AS can do ...

Posted on Thu, 27 Dec 2018 14:54:07 -0800 by gmp

Python Data Grabbing & Analysis & Machine Learning & Mining & Neural Network

First: Data grabbing: 1: Background research 1: Check robots.txt to find out what restrictions are imposed on crawling the site. 2): pip install builtwith;pip install python-whois 2: Data grabbing: 1: Dynamic loading content: Using selenium #!/usr/bin/env python # -*- coding: utf-8 -*- from selenium import webdriver f ...

Posted on Thu, 27 Dec 2018 14:03:06 -0800 by t_miller_3

OGG-01224 Address already in use

1. The startup manager can't start either. This error will occur. 2013-01-03 06:28:58  ERROR   OGG-01224  Address already in use.      2013-01-03 06:28:58  ERROR   OGG-01668  PROCESS ABENDING.   It shows that the original Manager process of Golden Gate is still working and occupies the port. Run the following comman ...

Posted on Wed, 26 Dec 2018 12:54:06 -0800 by richo89

shell special symbols, cut,sort,wc,uniq,tee,tr,split commands

shell special symbols (1) Special symbols * Any arbitrary character ? Any character * # comment character *\ Definition character * pipe symbol cut command Cut is used to intercept a field in the form of # cut d `separator character'[-cf]n, n being a number. Options: d is followed by a separator, which should be enclosed in single quotati ...

Posted on Tue, 25 Dec 2018 10:03:06 -0800 by jrtaylor

Simple Analysis of Glide Anomalies Similar to You cannot start a load for a destroyed activity

Recently, when I was working on a project, I encountered the exception of You cannot start a load for a destroyed activity when I used Glide to load network pictures. Scenario Description: Click into an activity to request the success of the network request, then use Glide to load the network image ac ...

Posted on Tue, 25 Dec 2018 08:54:07 -0800 by forum

Test 2 for NOIP- Result for Day2

worry After this summer vacation, we will go to NOIP. There are also 20 tests in 55 days of summer vacation. Just in case I write a summary for every test I play. . Don't talk about death. T1 is what I don't really understand. The exam is three months away. Day2 (30/300) T1 Permut(0/100) Title Description Find out how many inverse ...

Posted on Mon, 24 Dec 2018 11:03:06 -0800 by Saethyr

oracle 10g rac modifies public ip, vip and private ip

oracle 10g rac modifies public ip, vip and private ip[TOC]1.IP Address PlanningHostnameCurrent IPModified IPPublic IPnode1192.168.56.20192.168.100.20Public IPnode2192.168.56.21192.168.100.21VIPnode1-vip192.168.56.98192.168.100.98VIPnode2-vip192.168.56.99192.168.100.99Private IPnode1-priv10.1.1.110.10.10.1Private IPnode1-priv10.1.1.210.10.10.22. ...

Posted on Sun, 23 Dec 2018 10:54:06 -0800 by perry789

Reading Notes in iOS Drawing Practical UIKit Solutions (4) - Masks, Blurs and Animations

Masks, blurs and animations will add a lot to our APP. Now let's get to know it. Drawing Images with Blocks Using the following tool functions, you can simplify the process of creating an image. typedef void(^DrawingStateBlock)(); UIImage * DrawIntoImage(CGSize size, DrawingStateBlock block) { UIGraphicsBegin ...

Posted on Sun, 23 Dec 2018 01:18:06 -0800 by vbzoom.com