Programmer Think

In a historical project, Xiaocai has connected to the Flutter Module and used fluterboost as the Platform Channel bridge. However, there are many problems in the actual development, only two impressive small problems are recorded; Problem 1:. so file confusion problem analysis The NDK used in the history project of the small dish is armeabi, bu ...

Hadoop/HDFS/MapReduce/Impala is designed to store and process a large number of files, such as terabytes or petabytes of data. A large number of small files have a great impact on the query performance, because NameNode needs to save a large number of HDFS file metadata. If it queries many partitions or files at one time, it needs to obtain the ...

1, class component creation method import React from 'react'; class B extends React.Component { constructor(props){ super(props); } render(){ return ( <div>hi</div> ) } } 2, Props external data class Parent extends React.Component { constructor(props){ super(props) this.state = {name:'frank'} ...

SQL Prompt is a practical SQL syntax prompt tool. It searches automatically according to the object name, syntax and code fragment of the database, and provides users with appropriate code selection. Automatic script settings make code easy to read - especially useful when developers are not familiar with scripts. This article describes not to ...

Article directory statement Preface 1, Convolutional neural network 1.1 import library 1.2 boundary filling 1.3 single step convolution 1.4 forward propagation of convolution layer 1.5 forward propagation of pool layer 1.6 back propagation of convolution layer 1.6.1 calculation of dA 1.6.2 calculat ...

I have a Live Android application. I have received the following stack trace information from the market. I don't know why it happened in the application code instead of happening, but caused by some or other events in the application (assumed) I don't use Fragments, but I still have a reference to the fragment manager. If someone can under ...

The Kotlin coding specification used in a big BAT factory has added a lot of contents on the basis of the official Kotlin specification, which is of great reference value. Code organization [mandatory] in a mixed java source project, the Kotlin source file should be located in the same root director ...

I am trying to get the absolute screen pixel coordinates in the upper left corner of the view. However, all the methods I can find, getLeft(), such as getLeft() and getRight(), don't work because they all seem to be relative to the view's parent, so give me 0. What's the right way? If helpful, for the put pictures back in order game. I want ...

Preface I'm an Android Developer. I'll just introduce the hybrid development of Android and Flutter here. There are many related articles on the Internet about the mixed development of native and Flutter, which are basically done by using the methods of FlutterView and FlutterFragment. However, in th ...

February 5th 1. target Master the layout manager of Android UI design 2. Learning notes 2.1 UI components TextView Botton RadioBotton EditView ImageView RecyclerView 2.2 layout manager 2.2.1 linear layout Most common attributes attribute attribute attribute android:id android:layo ...