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brief introduction With the rise of mobile development and front-end development, more and more Web back-end applications tend to implement Restful APIs.The Restful API is a simple, easy-to-use front-end and back-end separation scheme that simply handles client requests and returns the results without r ...

Preface AAC is a very good set of framework components. If you haven't understood it yet, I recommend you to read my previous series of articles: Android Architecture Components Part1:Room Android Architecture Components Part2:LiveData Android Architecture Components Part3:Lifecycle Android Architecture Components Part4:ViewModel After a year' ...

1. Synchronized code block grammar Synchronized (lock){ // Code segments requiring access to critical resources } _Lock must be an object_ 1) When the program goes to the code segment, it uses the lock to lock the critical resources. At this time, other threads can not execute the code in the co ...

Simply speaking, network flow is an algorithm for judging the maximum flow from S to T in the graph. It's not difficult. Look at it well. Here are a few blogs to recommend: (Code Reference No. 2) Look at this first: https://blog.csdn.net/mmy1996/article/details/71056041 The most detailed description: ht ...

01. - Function - Return Value (1). Find the sum of any number You can specify the return value of a function by returning def fn(*nums): # Define a variable to hold the result result = 0 # Traversing through tuples and accumulating elements in tuples for n in nums: result ...

Links: Lougu Valley            POJ Title Description Farmer John wants to set up a telephone line at his farm. Unfortunately, the phone company is uncooperative, so he needs to pay for some of the cables required to connect his farm to the phone system. There are N (1 ≤ N ≤ 1,000) forlorn telephone poles conveniently numbered 1..N that ar ...

Catalog   Explanation of Algorithms NEXT Array Explanation Template Example A:HDU-1711 Number Sequence B:HDU-1686 Oulipo C:HDU-2087 cut strips D:HDU-3746 Cyclic Nacklace E:HDU-1358 Period F:POJ-2406 Power Strings G:POJ-2752 Seek the Name, Seek the Fame H:POJ-3080 Blue Jeans Explanation ...

std::async, std::future creates background tasks and returns values. The thread is expected to return a value. std::async is a function template that starts an asynchronous task and returns a std::future object Asynchronous task: automatically create a thread and start executing the corresponding thread entry function, returning a std::futur ...

Be based on cmdr v1.0.3From golang flag to cmdr With a new command line interpreter framework, the most painful thing is to write data structures or streaming definitions. Let's first look back. cmdr The two most typical command-line interface definitions supported by most other three-party enhanced command-line interpreters will be studied l ...

Article Directory [1] Preface [2] poll system call function prototype [3] Program example [4] Advantages and disadvantages of poll [1] Preface poll is essentially the same as select, it copies the user's incoming array into the kernel space, then queries each fd for the corresponding device stat ...