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Tag: block
Java SE packages, packages, static keywords and code blocks
1. Encapsulation 1.1 Concept of encapsulation There are three major characteristics of object-oriented programs: encapsulation, inheritance, and polymorphism. In the class and object stage, the main research is on encapsulation characteristics. What is encapsulation? simply put It’s the shell shielding details. Encapsulation: organically combine data and methods of operating data, hide the properties and implementation […]
Multi-threading case–>Blocking queue
1. What is a blocking queue 1. The blocking queue is a special queue that also adheres to the “first in, first out” principle. 2. The blocking queue can be a thread-safe data structure with the following characteristics: When the queue is full, if you continue to queue, it will be blocked until other threads […]
Publish and subscribe model implemented based on fixed-length blocking message queue [c++]
#include <iostream> #include <vector> #include <queue> #include <thread> #include <mutex> #include <condition_variable> #include <functional> #include <cstring> #include <chrono> // Custom message structure template <typename CallbackType> struct CustomMessage { CallbackType callback; void* data; size_t length; CustomMessage(CallbackType callback, void* data, size_t length) : callback(callback), data(data), length(length) {} CustomMessage() = default; // Add default constructor }; // message […]
Solved: Python Error: IndentationError: expected an indented block problem
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Learn CompletableFuture: Keep your code from blocking!
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18 | Reactive programming framework design: How to make program calls respond immediately without blocking waiting?
In the first column, we discussed why the program crashes under high concurrency conditions. The main reason is that in the case of high concurrency, there are a large number of user requests that require program calculation and processing. The current processing method is to allocate a thread to each user request. When the thread […]
The web3 React dapp project gets canceled and completed and all order data from the blockchain through events and stores them in redux.
Okay, above, web3 uses antd to build the basic structure of the order component in the React dapp. We have demonstrated a basic order component. Then let’s continue and start with the environment. ganache terminal run ganache -d MetaMask Log in Then open the project and publish the contract truffle migrate –reset Then run the […]
[Performance Test] CPU problem location and analysis + thread blocking case analysis, one article directly on the high speed…
Table of Contents: Introduction Preface 1. Python programming from entry to proficiency 2. Practical implementation of interface automation projects 3. Web automation project actual combat 4. Practical implementation of App automation project 5. Resumes of first-tier manufacturers 6. Test and develop DevOps system 7. Commonly used automated testing tools 8. JMeter performance test 9. Summary […]
Secure voting system based on blockchain and threshold password (Python+Django+Node+web3+SQLite3)
Table of contents Summary I Abstract I Chapter 1 Introduction 1 1.1 Research background and significance of the topic 1 1.2 Research status at home and abroad 3 1.3 Contents of this article 8 1.4 Structural arrangement 10 Chapter 2 Related Knowledge and Technology 11 2.1 Blockchain related knowledge 11 2.1.1 Blockchain 11 2.1.2 Ethereum […]