Programmer Group

OTA introduction: The full name of OTA is over the air. In embedded systems, it refers to the online software upgrade of an embedded system. As for MCU system, it is an online update of Firmware for the whole MCU, so it is also called FOTA. DFU is also called Device firmware upgrade. All have the same meaning. OTA is used here. General MCU gene ...

preface The Flink real-time computing platform has been built since half a year. Elasticsearch has been used in some storage layers and contacted Flink from scratch. In the past half a year, many pits have been encountered, which has changed from traditional development to big data development. Elasticsearch contains a variety of fuses to prev ...

unique_ptr is one of the smart pointers provided by C++ 11 to prevent memory leakage. It is a smart pointer that exclusively enjoys the ownership of the managed object pointer. unique_ The PTR object wraps a raw pointer and is responsible for its life cycle. When the object is destroyed, the associated original pointer is deleted in its destruc ...

Author: Youmeng + technical expert Yanke1, BackgroundApplication performance stability is a key link in a good user experience. In order to better ensure the stability of application performance, exception capture plays a vital role in ensuring the stability of online products. Our team launched U-APM mobile application performance monitoring p ...

FlowLayout layout manager Layout features Locate the components line by line, from left to right in the line, and wrap when one line is full.The default alignment is centered.Without changing the size of the component, the component is displayed according to the original size of the component.FlowLayout is the default layout manager for the P ...

introduction There are two types of loops in Python syntaxwhile loopfor loop It also introduces the functions of the keywords continue and break in the loop.Basic structure of programIn program development, there are three basic structures:Sequence - execute code sequentially from top to bottomBranch / select -- determine the branch to execute ...

prefaceFor a long time, the Java Trojan horse has been implemented by entering the bytecode defineClass. The advantage of this method is that it can completely enter a class and realize almost all functions in Java. The disadvantage is that the Payload is too large and not as easy to modify as a scripting language. There are also many features, ...

Is it 2017?? Using collaborative programs in Unity is usually a good way to solve some problems, but it also has some disadvantages: 1. The collaborator cannot return a value. This encourages programmers to create huge monolithic collaborations instead of writing them in many small ways. There are some alternative methods, such as passing th ...

We talked last time Heap and heap sorting This time, let's talk about heap related topics.1, Almost ordered array sorting1. Title DescriptionAn almost ordered array is known, which means that if the array is arranged in order, the distance of each element must not exceed K, and K is relatively small relative to the length of the array.Please se ...

File saving processThe file saving process of onlyoffice is as followsThe user edits the document in the document editorThe document editor sends the changes to the document serverWhen the user closes the document editor, the document server will call back the callback URL configured by the user for notificationThe callback program downloads th ...