Programmer Think

FileOutputStream file operation byte output stream [4 types of construction methods] <1>FileOutputStream(String filePath); [construction method parameters are directly transferred to file path] create the corresponding fileoutputstream file operation output stream object according to the path specified by the user; If the path is ill ...

Why use thread pools? Thread pool is a form of multi-threaded processing. Tasks are added to the queue during processing, and then automatically started after threads are created. Thread pool threads are background threads. Each thread uses the default stack size, runs at the default priority, and is in a multithreaded unit. If a thread ...

catalogue 1. Digital combination 2. Application of piecewise function 3. Mathematical calculation 4. Judgment date 5. Numerical sorting 6. Fibonacci sequence 7. Time function 8. Draw a diamond 9. Application questions - raw rabbit 10. Output prime 1. Digital combination Title: there are four numbers 1, 2, 3 and 4. How many three di ...

Object oriented -- Java experiment report Experiment 3: Java object oriented (2) Experiment 3 object oriented (2) (preview report) <center> <strong>full name:</strong> <u>XXX</u> &emsp;&emsp; <strong>Class:</strong> <u>XXXXX</u> &emsp;&emsp; ...

Official documentation of Python built-in functions 1. abs() function Returns the absolute value of a number print(abs(-45)) #Return 45 print(abs(-0.5)) #Return 0.5 2. all() function It is used to judge whether all elements in a given parameter are True. If yes, it returns True; otherwise, it returns False. Elements are True except 0, ...

What should you do if you always encounter an eye edge when galloping in the summoner Canyon? No problem! Teach you to guess numbers! Get rid of the trouble of eye edge and find the happy mood when playing small games! To guess the number, we have to have a random number first. How do we generate it? int main() { int a=rand(); printf("%d", ...

brief introduction C++11 smart pointer preface 1, What is a smart pointer? shared_ptr strong intelligent pointer, which can change the reference count of resources weak_ptr is a weak smart pointer and does not change the reference count of resources unique_ptr exclusive smart pointer, which can only be transferred and cannot be assign ...

background I believe that many small partners in work will use thread pool, but the definition and use of thread pool is a complex process, because there are as many as 7 thread pool constructors alone, and the definition of each parameter is not a simple basic data structure. Just pass it in directly Therefore, some inexperienced partn ...

The purpose of recording program log information is to: It is very convenient to understand the operation of the programIt can analyze the user's operation behavior, preferences and other informationIt is convenient for developers to check bug s 2. Introduction to logging level The logs can be divided into 5 levels, from low to high: DEBUGIN ...

preface Detailed serialization of Spring transactions [detailed explanation of Spring transactions] - 1 Case demonstration of transaction propagation [detailed explanation of Spring transactions] - 2 Considerations for transaction application [detailed explanation of Spring transactions] - 3 Eight scenarios of transaction invalidation [de ...