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Android修复通知栏跳动的问题

Some examples: Notification of a new chat message should be stamped when the message was received....Notification of an ongoing file download (with a progress bar, for example) should be stamped when the...Notification of a completed file download should be stamped when the download finished....Notification of an upcoming meeting should be stamped with the time the meeting will begin (that is,...Notification of an ongoing countdown timer should be stamped with the timer’s end time.

1.2K1 0

读锁写锁

private StampedLock lock = new StampedLock(); public void put(Long value) { long stamped...(Exception ex) { ex.printStackTrace(); }finally { lock.unlockWrite(stamped...); // 释放写锁 } } public void get() { long stamped = -1; // 设置标记位 try...{ stamped = lock.readLock(); // 获取读锁 -->这里是悲观锁实现 --> stamped重新赋值标记位 System.out.println...lock.validate(stamped)){ try { stamped = lock.readLock();

1.2K3 1

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Fix Notification Switching Position Issue

Some examples: Notification of a new chat message should be stamped when the message was received....Notification of a completed file download should be stamped when the download finished....Notification of an upcoming meeting should be stamped with the time the meeting will begin (that is,...Notification of an ongoing stopwatch (increasing timer) should be stamped with the watch’s start time...Notification of an ongoing countdown timer should be stamped with the timer’s end time.

5063 0

面试系列之-读写锁（JAVA基础）

Map MAP = new HashMap(); //创建一个印戳锁 final static StampedLock STAMPED_LOCK...StampedLock(); //对共享数据的写操作 public static Object put(String key, String value){ long stamp = STAMPED_LOCK.writeLock...Print.tco(getNowTime() + "LOCK进入过写模式，只能悲观读"); //进入了写锁模式，只能获取悲观读锁 long stamp = STAMPED_LOCK.readLock...return value; } finally{ Print.tco(getNowTime() + " 释放了READ_LOCK"); STAMPED_LOCK.unlockRead...STAMPED_LOCK.validate(stamp)){ //乐观读的印戳值无效，表明写锁被占用过 Print.tco(getNowTime() +

5961 0

易拉罐底部缺陷检测数据集VOC+YOLO格式1122张5类别

jpg文件个数)：1122 标注数量(xml文件个数)：1122 标注数量(txt文件个数)：1122 标注类别数：5 标注类别名称:["FB","can","hole","scratch","stamped..."] 每个类别标注的框数： FB 框数 = 586 can 框数 = 1122 hole 框数 = 592 scratch 框数 = 542 stamped 框数 = 466 总框数：3308

1520 0

架构师四面遭遇StampedLock,这么应对保拿offer

private final static StampedLock STAMPED_LOCK = new StampedLock(); public static void main(String[]...long stamp = STAMPED_LOCK.writeLock(); try { count++; } finally { // see!!!...STAMPED_LOCK.unlock(stamp); } } 2 StampedLock性能为何优于ReadWriteLock 在于支持乐观读： ReadWriteLock支持多线程同时读，但当多线程读时

3643 0

ROS联合webots实战案例(三)在webots中使用ROS控制小机器人

在下面的代码中我会进行注释，如遇到关键点我会标明序号，到代码下面找到对应序号查看#include "ros/ros.h"// webots_ros的一些数据服务1 #include Stamped.h...Generate messages in the 'msg' folder add_message_files( FILES BoolStamped.msg Float64Stamped.msg...Int32Stamped.msg Int8Stamped.msg RadarTarget.msg RecognitionObject.msg StringStamped.msg...ros.h" #include #include #include Stamped.h...*************************************************/ void keyboardDataCallback(const webots_ros::Int32Stamped

1.7K3 0

ROS2机器人编程简述humble-第四章-The TF Subsystem

案例： #include #include #include #include "geometry_msgs/msg/transform_stamped.hpp...functional> #include #include #include #include "geometry_msgs/msg/transform_stamped.hpp...chrono> #include #include #include #include "geometry_msgs/msg/transform_stamped.hpp

1K1 0

Google Earth Engine——南极洲参考高程模型（REMA）是一个高分辨率、有时间戳的南极洲数字表面模型（DSM），具有2米和8米的空间分辨率

The Reference Elevation Model of Antarctica (REMA) is a high resolution, time-stamped Digital Surface

3341 0

TF2使用细节

geometry_tutorials/turtle_tf2_cpp/src/static_turtle_tf2_broadcaster.cpp #include stamped.hpp...geometry_tutorials/turtle_tf2_cpp/src/turtle_tf2_broadcaster.cpp #include stamped.hpp...geometry_tutorials/turtle_tf2_cpp/src/turtle_tf2_listener.cpp #include stamped.hpp...#include stamped.hpp> #include #include (*tf2_buffer_); point_sub_.subscribe(this, "/turtle3/turtle_point_stamped

3K0 0

ROS机器人程序设计（原书第2版）补充资料（捌）第八章导航功能包集入门 navigation

Using sensor messages with tf Using Stamped datatypes with tf::MessageFilterThis tutorial describes how...to use tf::MessageFIlter to process Stamped datatypes.

7792 0

ROS2机器人编程简述humble-第四章-COMPUTATION GRAPH .2

memory> #include "br2_tf2_detector/ObstacleMonitorNode.hpp" #include "geometry_msgs/msg/transform_stamped.hpp...ObstacleDetectorNode.hpp" #include "sensor_msgs/msg/laser_scan.hpp" #include "geometry_msgs/msg/transform_stamped.hpp

9281 0

CoppeliaSim（V-Rep）和ROS2的使用说明

end function getTransformStamped(objHandle,name,relTo,relToName) -- This function retrieves the stamped...end function getTransformStamped(objHandle,name,relTo,relToName) -- This function retrieves the stamped

3K4 1

Java并发：了解无锁CAS就从源码分析

Integer> num = new AtomicStampedReference(1, 0); Integer i = num.getReference(); int stamped...= num.getStamp(); if (num.compareAndSet(i, i + 1, stamped, stamped + 1)) { System.out.println

6716 0

【mysql错误】全量+增量数据校验后数据库启动报错

Log sequence number in the ib_logfiles is 1086530931761, logsequence numbers stamped to ibdata file header

1.8K3 0

ROS2机器人坐标工具→tf2简介

它使用 exceptions.h 中的异常和 transform_datatypes.h 中的 Stamped 数据类型。

1.6K1 0

Google Earth Engine——南极洲高程模型（REMA）2米和8米的空间分辨率数据集

镶嵌后REMA数据 The Reference Elevation Model of Antarctica (REMA) is a high resolution, time-stamped Digital

4261 0

Java并发基础：了解无锁CAS就从源码分析

Integer> num = new AtomicStampedReference(1, 0); Integer i = num.getReference(); int stamped...= num.getStamp(); if (num.compareAndSet(i, i + 1, stamped, stamped + 1)) { System.out.println

8344 0

Webots R2019和ROS使用笔记（机器人仿真软件与操作系统）

#include "ros/ros.h" #include Stamped.h> #include #include...keyboard_teleop' node."); ros::shutdown(); exit(0); } void keyboardCallback(const webots_ros::Int32Stamped

3.2K2 0

排名前十的时序数据库

It is purpose-built to handle the massive volumes and countless sources of time-stamped data produced

4.8K3 0

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