[CF Review] Codeforces Round 874 (Div. 3) 20230520

[CF Replay] Codeforces Round 874 (Div. 3 20230520 Summarize A. Musical Puzzle 2. Thinking analysis 3. Code implementation B. Restore the Weather 1. Description of the topic 2. Thinking analysis 3. Code implementation C. Vlad Building Beautiful Array 1. Description of the topic 2. Thinking analysis 3. Code implementation D. Flipper 1. Description of the […]

First review! A Comprehensive Survey of the Segmentation Everything Model (SAM)

Click the card below to follow the “CVer” official account AI/CV heavy dry goods, delivered in the first time Click to enter->【Image Segmentation】WeChat Technology Exchange Group Reprinted from: Heart of the Machine As the first study to comprehensively introduce the progress of SAM-based models, this paper focuses on the application of SAM to various tasks […]

RTAB-Map source code review

This article focuses on 2D laser mapping, divided into rtabmap-ros source code and rtabmap source code. One is the interface between rtabmap and ros, and the other is the core algorithm of rtabmap. 1. rtabmap-ros rtabmap_ros-master\rtabmap_slam\src\CoreWrapper.cpp is the core wrapper of ratabmap-ros. 1.1 CoreWrapper::commonLaserScanCallback CoreWrapper::commonLaserScanCallback( const nav_msgs::OdometryConstPtr & odomMsg, const rtabmap_msgs::UserDataConstPtr & userDataMsg, const sensor_msgs::LaserScan […]

When RecyclerView slides, it imitates the ranking list to automatically display and hide its own ranking

Similar to the ranking version in Figure 1, the bottom 21 is your own ranking, and then when you slide to 21, it becomes Figure 2. Above code: Guide package: //adapter framework implementation “com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.47”, TestActivity.java: package com.example.mine.activity; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.appcompat.app.AppCompatActivity; import androidx.recyclerview.widget.DividerItemDecoration; import androidx.recyclerview.widget.LinearLayoutManager; import androidx.recyclerview.widget.RecyclerView; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; […]

android11 camera preview app code

PreviewActivity package com.example.camera01; import android.Manifest; import android.content.pm.PackageManager; import android.graphics.ImageFormat; import android.hardware.camera2.CameraAccessException; import android.hardware.camera2.CameraCaptureSession; import android.hardware.camera2.CameraCharacteristics; import android.hardware.camera2.CameraDevice; import android.hardware.camera2.CameraManager; import android.hardware.camera2.CaptureRequest; import android.hardware.camera2.params.OutputConfiguration; import android.hardware.camera2.params.SessionConfiguration; import android.hardware.camera2.params.StreamConfigurationMap; import android.os.Bundle; import android.os.Handler; import android.os.HandlerThread; import android.util.Log; import android.util.Size; import android.view.SurfaceHolder; import android.view.SurfaceView; import androidx.annotation.NonNull; import androidx.appcompat.app.AppCompatActivity; import androidx.core.app.ActivityCompat; import androidx.core.content.ContextCompat; import java.util.Arrays; import java.util.List; import java.util.concurrent.Executor; […]

Spring container overview

Overview of the Spring Container Container overview BeanFactory ApplicationContext BeanFactory Attributes & amp; Method Introduction FACTORY_BEAN_PREFIX getBean getBeanProvider ObjectFactory [Java SPI (Service Provider Interface) mechanism](https://blog.csdn.net/CHENFU_ZKK/article/details/130828504) ObjectProvider containsBean isSingleton isPrototype isTypeMatch getType getAliases secondary interface HierarchicalBeanFactory Autowire CapableBeanFactory ListableBeanFactory quote Container overview Container overview The Ioc container in Spring can be roughly divided into two types: […]

JavaWeb10 (realize settlement & view order & order details)

Directory 1. Effect preview 2. Implementation ideas 2.1 Realize settlement ① Form an order and assign a value ② Insert the order into the data table tb_order, and at the same time insert the order item corresponding to the order into the data table tb_orderitem 2.2 View my order ① The underlying code ② Front-end […]